Tollycraft 44 / 45 Cockpit Motor Yacht

Built 1986–1996 by Tollycraft Yacht Corp. (Kelso, WA)

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About the Tollycraft 44 / 45 Cockpit Motor Yacht

Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.

Illustration of a Tollycraft 44 / 45 Cockpit Motor Yacht — **Illustration, not a photo of this model.** AI-generated illustration of a typical flybridge motor yacht.

Built: 1986–1996
Builder: Tollycraft Yacht Corp. (Kelso, WA)
Length: 44.17 ft
Beam: 14.67 ft
Draft: 3 ft
Displacement: 28,000 lb
Hull: fiberglass
Hull / keel: planing
Propulsion: inboard
Fuel: 398 gal
Water: 140 gal
Water heater: AC + engine · standard
Generator: standard
Bow thruster: not fitted
Stern thruster: not fitted
Steering: hydraulic

Tank capacities — where the figures come from

Fuel 398 gal
“Fuel Tank: 396 Gallons (1499.02 Liters)” — broker listing (1993), curtisstokes.net · “Fuel Tank: 400 Gallons (1514.16 Liters)” — search excerpt (1988), curtisstokes.net

Listings give roughly 400 gal; no builder figure was found.
Water 140 gal
“Fresh Water: 140 Gallons (529.96 Liters)” — broker listing (1993), curtisstokes.net · “Fresh Water: 140 Gallons (529.96 Liters)” — search excerpt (1988), curtisstokes.net

Two listings agree.
Holding unknown
“Holding Tank: 80 Gallons (302.83 Liters)” — broker listing (1993), curtisstokes.net · “Holding Tank: 35 Gallons (132.49 Liters)” — search excerpt (1988), curtisstokes.net

Two listings disagree (80 on a 1993 boat, 35 on a 1988 boat); may be a year change or an owner refit.
Water heater AC + engine · standard
“Standard Equipment ... Water heater, 120 volt with heat exchanger” — builder (1992), mvjollymon.com · “Hot water heater with engine heat exchanger” — broker listing (1990), westwindyachtscanada.com

The builder's spec sheet for the 45' Cockpit Motor Yacht (Rev. 08/92) lists a 120 V water heater with engine heat exchanger as standard but gives no capacity, and no size was found elsewhere.

Tanks are often replaced or added on older boats — check the tank labels or a survey for yours.

Thrusters and steering — where this comes from

Bow thruster not fitted
“Standard Equipment and Optional Equipment lists (Rev. 08/92) include no bow thruster” — builder (1992), mvjollymon.com · “Boat handling is made easy with dual engines and a bow thruster” — search excerpt, curtisstokes.net

The builder's 45-foot Cockpit Motor Yacht sheet (Rev. 08/92) has full standard and option lists with no thruster, so none was factory-fitted that year. One 44 cockpit motor yacht broker listing mentions a bow thruster added later, a single boat. Earlier 44 years weren't checked against a builder list.
Stern thruster not fitted
“Standard Equipment and Optional Equipment lists (Rev. 08/92) include no stern thruster” — builder (1992), mvjollymon.com
Steering hydraulic
“Control station, upper helm with hydraulic steering, MMC electronic controls” — builder (1992), mvjollymon.com

Hydraulic steering standard at the upper (bridge) helm; a lower control station was an option (C-22). No steering maker named.

Thrusters and steering are often replaced — check the units on your boat before ordering parts.

Sources disagree on holding tank — left blank rather than guessed.

A 40 Sundeck with a cockpit; over 100 44s built before the 1994 reverse-transom 45 CMY (45.25 ft). Fuel 300 gal before 1991, 398 after. hulls_built is HMY's 'over 100' figure for the 44 only. Build count (approximate, not stored): HMY: over 100 of the 44 built before the 45 version. Hull material from PassageMaker, which says Tollycraft hulls were always solid hand-laid fiberglass.

Engines fitted

Caterpillar 3208TA — 375 hp, diesel, twin factory option
HMY: optional 375 hp Cat diesels cruise about 23 kn; a 1988 hull is listed with twin 375 hp Cat 3208s.

Sources: hmy.com · yachtr.com
Detroit Diesel 6V53 — 400 hp, diesel, twin factory option
HMY: optional 400 hp Detroit 6V53s cruise about 24 kn.

Sources: hmy.com
Caterpillar 3116 — 300 hp, diesel, twin factory option
Later boats; a 1993 hull is listed with twin 300 hp Cat 3116s dated 1993 (appear original).

Sources: curtisstokes.net

Boats of the same model can differ — check which engines yours actually has before ordering parts.

Generator

standard

“Standard Equipment ... Generator, 8.0kw Diesel (FWC), with sound shield and battery” — builder (1992), mvjollymon.com · “Optional Equipment: A-24 Generator, 6.5 KW gas (FWC); A-25 Generator, 9.0 KW gas (FWC)” — builder (1992), mvjollymon.com

The 1992 builder spec sheet lists an 8.0 kW diesel as standard and a 6.5 or 9.0 kW gas set as optional (the gas sets presumably for gas-engined boats). Single listings show an Onan 8 kVA diesel (1992 boat) and a Kohler 9 kW (1990 boat); no builder document covers the earlier 44 years.

Generator (make not stated) — 8 kW, diesel standard
Make not named by the builder; a 1992 44 Cockpit Motor Yacht listing shows an Onan 8 kVA diesel.

“Generator, 8.0kw Diesel (FWC), with sound shield and battery” — builder (1992), mvjollymon.com
Generator (make not stated) — 6.5 kW, gas factory option
Make not named by the builder.

“A-24 Generator, 6.5 KW gas (FWC)” — builder (1992), mvjollymon.com
Generator (make not stated) — 9 kW, gas factory option
Make not named by the builder; a 1990 gas-engined 44 Cockpit Motor Yacht listing shows a Kohler 9 kW.

“A-25 Generator, 9.0 KW gas (FWC)” — builder (1992), mvjollymon.com

Generators are often replaced or added — check the unit's own plate before ordering parts.

Known problems for this model

No well-sourced problem reports found yet.

Engines & parts

Caterpillar 3208 (NA / T / TA) parts: good

Factory optional engine — you entered “Caterpillar 3208TA”

V8 introduced in the 1970s and discontinued in the late 1990s (Big Bear Engine gives 1999). Naturally aspirated versions run about 210 hp; turbo and turbo-aftercooled versions go up to 435 hp. Cat dealers still supply many genuine parts by serial number, and aftermarket in-frame/overhaul kits (pistons, rings, liners, bearings) are sold by Diesel Pro Power, Highway and Heavy Parts and others; complete remanufactured long blocks are also sold. The block is unsleeved from the factory but can be bored and sleeved during a rebuild.

Parts sources: Diesel Pro Power, Highway and Heavy Parts (Cat 3208), Big Bear Engine Company (3208 long blocks)

Common problems (3)

Aftercooler failure flooding the engine (TA models) cooling
The seawater-cooled aftercooler on turbo-aftercooled 3208s has aluminum parts that corrode; a failure can let seawater into the cylinders. Owners pull, clean, grease and pressure-test aftercoolers every 2–3 years and some replace them on a fixed schedule.
trawlerforum.com · forums.ybw.com
Short life at high ratings / overloading engine
The higher-rated 3208TA engines last longer when run well below full power and propped so they can reach rated rpm; overheating or running at full load continuously shortens life.
trawlerforum.com · trawlerforum.com
Overheating at high throttle cooling
Common causes owners check are clogged heat exchangers, thermostats, fouled keel coolers or restricted raw water flow, and faulty temperature senders.
justanswer.com · facebook.com

Maker’s service schedule (20)

Engine oil & filter change	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Engine Oil and Filter - Change” — manufacturer, princessklubben.se
Fuel filters & water separator	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Fuel System Primary Filter/Water Separator Element” — manufacturer, princessklubben.se
Raw-water pump impeller	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Auxiliary Water Pump - Inspect” — manufacturer, princessklubben.se
Engine pencil zincs	50 hrs	“Every 1900 L (500 US gal) of Fuel or 50 Service Hours ... Zinc Rods - Inspect/Replace” — manufacturer, princessklubben.se
Air filter / intake silencer	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Engine Air Cleaner Element - Clean/Replace” — manufacturer, princessklubben.se
Valve clearance check / adjust	2,000 hrs	“Initial 9000 L (2400 US gal) of Fuel or 250 Service Hours or 1 Year ... Engine Valve Lash - Inspect/Adjust” — manufacturer, princessklubben.se
Coolant replacement & freeze-point test Cat DEAC / conventional coolant	1,000 hrs or 2 yrs	“Every 36 000 L (9000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Cooling System Coolant (DEAC) - Change” — manufacturer, princessklubben.se
Coolant replacement & freeze-point test Cat ELC (extended life coolant)	6,000 hrs or 4 yrs	“Every 216 000 L (57 000 US gal) of Fuel or 6000 Service Hours or 4 Years ... Cooling System Coolant (ELC) - Change” — manufacturer, princessklubben.se
Turbocharger inspection	1,000 hrs or 2 yrs	“Every 36 000 L (9000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Aftercooler Core - Clean/Test” — manufacturer, princessklubben.se
Turbocharger inspect	2,000 hrs	“Every 72 000 L (19 000 US gal) of Fuel or 2000 Service Hours ... Turbocharger - Inspect” — manufacturer, princessklubben.se
Heat exchanger & oil cooler cleaning	2,000 hrs	“Every 72 000 L (19 000 US gal) of Fuel or 2000 Service Hours ... Heat Exchanger - Inspect” — manufacturer, princessklubben.se
Injector test / service	2,000 hrs	“Every 72 000 L (19 000 US gal) of Fuel or 2000 Service Hours ... Fuel Injection Nozzles - Test/Exchange” — manufacturer, princessklubben.se
Sea water strainer clean/inspect	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Sea Water Strainer - Clean/Inspect” — manufacturer, princessklubben.se
Coolant SCA test/add	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Cooling System Supplemental Coolant Additive (SCA)” — manufacturer, princessklubben.se
Hoses and clamps inspect/replace	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Hoses and Clamps - Inspect/Replace” — manufacturer, princessklubben.se
Crankcase breather clean	250 hrs or 1 yr	“Every 9000 L (2400 US gal) of Fuel or 250 Service Hours or Yearly ... Engine Crankcase Breather - Clean” — manufacturer, princessklubben.se
Thermostat (water temperature regulator) replace	1,000 hrs or 2 yrs	“Every 36 000 L (9000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Cooling System Water Temperature Regulator - R” — manufacturer, princessklubben.se
Marine transmission oil cooler clean/inspect	1,000 hrs or 2 yrs	“Every 36 000 L (9000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Marine Transmission Oil Cooler - Clean/Inspect” — manufacturer, princessklubben.se
Crankshaft vibration damper inspect	2,000 hrs	“Every 72 000 L (19 000 US gal) of Fuel or 2000 Service Hours ... Crankshaft Vibration Damper - Inspect” — manufacturer, princessklubben.se
Jacket water pump inspect	3,000 hrs or 2 yrs	“Every 108 000 L (28 500 US gal) of Fuel or 3000 Service Hours or 2 Years ... Water Pump - Inspect” — manufacturer, princessklubben.se

Service part numbers (4)

Fuel filter	Caterpillar 1R-0750	“\| Fuel Filter \| 1R0750 \|” — dealer, marineenergy.com.au · “Fuel Filter for Caterpillar 3208 Natural and Turbo engines 1R0750 Advanced Efficiency” — dealer, dieselpro.com
Zinc / anode heat-exchanger anode (10 mm); 2 on the 4W-9164 heat exchanger, 3 on the 7C-3114 heat exchanger	Caterpillar 6L-2283	“\| Anodes on 7C-3114 Heat Exchanger \| 6L-2283 \| [CM6L2283] x 3.” — dealer, marineenergy.com.au · “Zinc Anode for Caterpillar Marine Engines 6L2283 NPT: 1/4”” — dealer, dieselpro.com
Zinc / anode 16 mm anode, starboard bottom of bonnet, 4W-9164 heat exchanger only	Caterpillar 6L-2289	“Anodes on 4W-9164 Heat Exchanger \| 6L-2283 6L-2289 ... [TEC 02023] x 1. Starboard Side, bottom of the bonnet. 16mm” — dealer, marineenergy.com.au · “Zinc Anode for Caterpillar Marine Engines 6L2289 NPT: 1/2”” — dealer, dieselpro.com
Zinc / anode transmission oil cooler anode (if the cooler has one)	Caterpillar 6L-2288	“\| Anode - Transmission Oil Cooler (If present on cooler) \| 6L-2288 \|” — dealer, marineenergy.com.au · “Zinc Anode for Caterpillar Marine Engines 6L2288 NPT: 1/2”” — dealer, dieselpro.com

From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.

Sources disagree on horsepower — left blank rather than guessed.

Detroit Diesel 6V-53 (N / T) parts: good

Factory optional engine — you entered “Detroit Diesel 6V53”

Two-stroke 53-series V6; complete overhaul kits and service parts are still sold (Diesel Pro Power, Heavy Duty Pros), and used 53-series parts circulate among owners.

Parts sources: Diesel Pro Power (6V53 overhaul kits), Heavy Duty Pros

Common problems (1)

Heavy, leaky, smoky and noisy engine
Classic Bertram owners sum up the 6V53 as heavy and hard to install, prone to leaks, smoke and noise, but with good service parts support.
bertram31.com

Maker’s service schedule (18)

Engine oil & filter change	150 hrs	“Industrial & Marine 53, 71, 92 2-Cycle 150 Hours (oil drain interval, Table L-3)” — manufacturer, archive.org
Fuel filters & water separator	300 hrs	“Install new elements every 300 hours or when plugging is indicated” — manufacturer, archive.org
Coolant replacement & freeze-point test	1,000 hrs	“Clean the cooling system every 1,000 hours using a good radiator cleaning compound” — manufacturer, archive.org
Engine pencil zincs	500 hrs	“Every 500 hours, drain the water from the heat exchanger raw water inlet and outlet tubes ... [remove the zinc electrode” — manufacturer, archive.org
Heat exchanger & oil cooler cleaning	1,000 hrs	“remove the retaining cover every 1,000 hours and inspect the heat exchanger core” — manufacturer, archive.org
Drive belts inspect / replace	200 hrs	“check the tension of the drive belts every 200 hours” — manufacturer, archive.org
Air filter / intake silencer dry-type air cleaner	1 yr	“[replace] with new elements after one year of service or when the maximum allowable air intake restriction has been reac” — manufacturer, archive.org
Transmission fluid change Warner marine gear (and the other gear covered in Item 41)	200 hrs	“WARNER MARINE GEAR: ... Change the oil every 200 hours” — manufacturer, archive.org
Clean crankcase breather	1,000 hrs	“[Remove the crankcase breather] assembly every 1,000 hours and wash the steel mesh pad” — manufacturer, archive.org
Inspect blower screen	1,000 hrs	“Inspect the blower screen and gasket assembly every 1,000 hours” — manufacturer, archive.org
Check / clean air box drain tubes	1,000 hrs	“[check for flow of air from the] air box drain tubes every 1,000 hours” — manufacturer, archive.org
Check thermostats and seals	5,000 hrs or 1 yr	“Check the thermostats and seals at 5,000 hours or once a year” — manufacturer, archive.org
Inspect all hoses	500 hrs or 1 yr	“should be thoroughly inspected at least every 500 operating hours (1,000 hours for the fire-resistant ...) and/or annual” — manufacturer, archive.org
Drain water/sediment from fuel tank	500 hrs	“Open the drain at the bottom of the fuel tank every 500 hours to drain off any water and/or sediment” — manufacturer, archive.org
Coolant filter/conditioner element (if fitted)	500 hrs	“the filter element should be changed every 500 hours” — manufacturer, archive.org
Check emergency (air) shutdown	700 hrs	“[check the] operation of the emergency shutdown every 700 hours” — manufacturer, archive.org
Check engine and transmission mounts	2,000 hrs	“the condition of the mounting pads every 2,000 hours” — manufacturer, archive.org
Replace fresh-water pump seal	6,000 hrs	“[Replace the water pump seal after it has been in service] for 6,000 hours” — manufacturer, archive.org

Service part numbers (11)

Oil filter full-flow cartridge element, 9 in. (shell-type filter)	Detroit Diesel 5573014 Also: AC Delco PF132	“4.2250 - ELEMENT, OIL FILTER 3A 5573014 ELEMENT (9") (AC TYPE PF-132)” — manufacturer, archive.org
Oil filter spin-on element (engines with spin-on adaptor 5104419)	Detroit Diesel 25010495	“4.2250 - ELEMENT, OIL FILTER 25010495 ELEMENT . 1111 25011106 ELEMENT” — manufacturer, archive.org
Fuel filter secondary filter, spin-on (3/4 in. thread base)	Detroit Diesel 23530707 Replaces 25010778 Also: AC Delco TP916	“25010778 Superceded by DN 23530707” — dealer, powerlinecomponents.com · “Detroit Diesel Secondary Fuel Filter - 23530707 - Series 60 Series 53 Series 71 Series 92 Series 149” — dealer, industrialtecsupply.com
Fuel pre-filter / separator primary fuel strainer, spin-on (1 in. thread base)	Detroit Diesel 25010776 Also: AC Delco T915	“25010776 * CARTRIDGE (SPIN ON) (T-915)” — manufacturer, archive.org
Fuel pre-filter / separator primary fuel strainer, shell type (8 in. felt sock element)	Detroit Diesel 5575032 Also: AC Delco T552	“3C 5575032 ELEMENT (8", FELT SOCK TYPE, T-552)” — manufacturer, archive.org
Raw-water impeller smaller raw-water pump (manual fig. 8A, 2/3/4/6V-53), synthetic rubber	Detroit Diesel 5193602	“5.6230 - IMPLELLER, RAW WATER PUMP ... 8A 5193602 IMPELLER, 2,3,4,6V53 (SYNTHETIC).” — manufacturer, archive.org
Raw-water impeller larger raw-water pump (manual fig. 8B, 6V/8V-53), synthetic rubber	Detroit Diesel 5193553	“8B 5193553 IMPELLER, 6,8V53 (SYNTHETIC).” — manufacturer, archive.org
Raw-water pump kit smaller raw-water pump (2/3/4/6V-53)	Detroit Diesel 5197225	“5.6025 - RECONDITIONING KIT. RAW WATER PUMP 5197225 RECONDITIONING KIT, 2,3,4,6V53” — manufacturer, archive.org
Raw-water pump kit larger raw-water pump (6V/8V-53)	Detroit Diesel 5197224	“5197224 RECONDITIONING KIT, 6.8V53” — manufacturer, archive.org · “Detroit Diesel Marine Water Pump repair kit 6V53, 6V71, 6-71, 6V92 5197224P For 2 1/2" impeller height” — dealer, dieselpro.com
Zinc / anode heat-exchanger electrode assembly, 3 3/8 in.	Detroit Diesel 8515850	“5.5010 - ELECTRODE, HEAT EXCHANGER 6AB 8515850 ELECTRODE ASSY., 3, 4, 6, 8V53 (INCLUDES 3 3/8" ELECTRODE)” — manufacturer, archive.org
Thermostat 170 F, full-blocking (seal 5134269 separate)	Detroit Diesel 5143210 × 2	“5.2050 - THERMOSTAT ASSY. ... 6A,B 5143210 ... THERMOSTAT ASSY., 3,4,6,8V53 (170 DEG. OPENING TEMP.)” — manufacturer, archive.org · “Detroit Diesel Thermostat for engines 6V53 and 8V53 5143210 170 degrees” — dealer, dieselpro.com

From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.

Caterpillar 3116 parts: limited

Factory optional engine — you entered “Caterpillar 3116”

Supported by Cat dealers by serial number; aftermarket rebuilders (e.g., Big Bear Engine) sell parts and address known problems. Some 3116s built in France ('soft block') were problematic and owners are told to check serial numbers with Cat.

Parts sources: Big Bear Engine Company, Diesel Pro Power

Common problems (4)

Failures in high-load use engine
3116s generally do fine in trawlers but problems show up in fast boats run near full power for long periods; poor propping that overloads the engine ages it quickly.
trawlerforum.com
'Soft block' engines engine
A batch of French-built blocks had a reputation for early failure, sometimes within a few hundred hours.
trawlerforum.com
Injectors, fuel rack and heads fuel
Owners and rebuilders report injector/injector-cup, fuel rack and cylinder head problems; good maintenance history matters when buying.
4btengines.com · facebook.com
Low turbo/exhaust mixer height exhaust
The low-mounted turbo and exhaust mixer make it harder to get adequate exhaust riser height, so the exhaust installation needs care to avoid water backflow.
trawlerforum.com

Maker’s service schedule (18)

Engine oil & filter change	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Engine Oil and Filter - Change” — manufacturer, oxfordyachtagency.com
Fuel filters & water separator	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Fuel System Primary Filter/Water Separator Element” — manufacturer, oxfordyachtagency.com
Raw-water pump impeller	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Auxiliary Water Pump - Inspect” — manufacturer, oxfordyachtagency.com
Engine pencil zincs	50 hrs	“Every 1500 L (400 US gal) of Fuel or 50 Service Hours ... Zinc Rods - Inspect/Replace” — manufacturer, oxfordyachtagency.com
Valve clearance check / adjust	2,000 hrs	“First 7500 L (2000 US gal) of Fuel or 250 Service Hours ... Engine Valve Lash - Inspect/Adjust” — manufacturer, oxfordyachtagency.com
Coolant replacement & freeze-point test Cat DEAC / conventional coolant	1,000 hrs or 2 yrs	“Every 30 000 L (8000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Cooling System Coolant (DEAC) - Change” — manufacturer, oxfordyachtagency.com
Coolant replacement & freeze-point test Cat ELC (extended life coolant)	6,000 hrs or 4 yrs	“Every 182 000 L (48 000 US gal) of Fuel or 6000 Service Hours or 4 Years ... Cooling System Coolant (ELC) - Change” — manufacturer, oxfordyachtagency.com
Turbocharger inspection	1,000 hrs or 2 yrs	“Every 30 000 L (8000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Aftercooler Core - Clean/Test” — manufacturer, oxfordyachtagency.com
Turbocharger inspect	1,000 hrs or 2 yrs	“Every 30 000 L (8000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Turbocharger - Inspect” — manufacturer, oxfordyachtagency.com
Heat exchanger & oil cooler cleaning	2,000 hrs	“Every 60 000 L (16 000 US gal) of Fuel or 2000 Service Hours ... Heat Exchanger - Inspect” — manufacturer, oxfordyachtagency.com
Drive belts inspect / replace	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Belt - Inspect” — manufacturer, oxfordyachtagency.com
Fuel injection timing check	2,000 hrs	“First 7500 L (2000 US gal) of Fuel or 250 Service Hours ... Fuel Injection Timing - Check” — manufacturer, oxfordyachtagency.com
Thermostat (coolant temperature regulator) replace	3,000 hrs or 2 yrs	“Every 91 000 L (24 000 US gal) of Fuel or 3000 Service Hours or 2 Years ... Cooling System Water Temperature Regulator -” — manufacturer, oxfordyachtagency.com
Sea water strainer clean/inspect	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Sea Water Strainer - Clean/Inspect” — manufacturer, oxfordyachtagency.com
Jacket water pump inspect	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Water Pump - Inspect” — manufacturer, oxfordyachtagency.com
Coolant SCA test/add	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Cooling System Supplemental Coolant Additive (SCA)” — manufacturer, oxfordyachtagency.com
Hoses and clamps inspect/replace	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Hoses and Clamps - Inspect/Replace” — manufacturer, oxfordyachtagency.com
Crankcase breather clean	250 hrs or 1 yr	“Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Engine Crankcase Breather - Clean” — manufacturer, oxfordyachtagency.com

Service part numbers (3)

Oil filter	Sources disagree: 1R-0658 / 324-2598	“Oil Filter CAT 1R-0658 \| 3126B C7 3306 3304 3116 C4.2 3046 3066” — dealer, marineenergy.com.au · “Caterpillar 324-2598 Advanced Efficiency 3116 and 3126 Diesel Engine Oil Filter” — dealer, marineengineparts.com
Fuel filter	Caterpillar 1R-0751 Also: Baldwin BF7632, Fleetguard FF5324, WIX 33626	“Caterpillar 1R-0751 Advanced Efficiency 3116 and 3126 Diesel Engine Fuel Filter” — dealer, marineengineparts.com · “the secondary fuel filter Cat specifies for the 3114, 3116, 3126/B/E, C7, and C9 family” — dealer, allprodiesel.net
Raw-water impeller keyway-shaft Sherwood seawater pump	Sherwood 17000K	“\| Impeller \| 17000K KEY WAY \|” — dealer, marineenergy.com.au · “Caterpillar Marine Engines ... Common applications include: ... CAT 3116” — dealer, marisolmarine.com
Zinc / anode	Caterpillar 6L-2283 × 3	“Anode kit CAT3116 \| 3 x 6L2283 2 x 6L2281 1 x 6L3104” — dealer, marineenergy.com.au · “Zinc Anode for Caterpillar Marine Engines 6L2283 NPT: 1/4”” — dealer, dieselpro.com

From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.

Model sources (6)

hmy.com · passagemaker.com · yachtr.com · curtisstokes.net · mvjollymon.com · westwindyachtscanada.com

Own a Tollycraft 44 / 45 Cockpit Motor Yacht? Add her to your boats, then share a photo — names, numbers and faces are blurred before it appears.

Other Tollycraft models

Tollycraft 26 Sedan 1973–1987
Tollycraft 34 Tri-Cabin 1975–1985
Tollycraft 40 Sundeck 1985–1994
Tollycraft 48 Motor Yacht (48 Cockpit MY) 1976–1998

Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.