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Yanmar Diesel Service marathon Generator Post 2
We’ll here is what it takes to bring generator cooling system back from dead and provide a 2000 HOUR SERVICE AND 4000 HOUR SERVICE.
Kohler Parts:
363435 Hose – Turbo to Intake – $175.00
GM47465 Oil Filter – $9.85
225007- Thermostat -$ 53.75
252898 Fuel Filter – $9.65
225626 Fan Belt – $11.84
258646 Air Cleaner Element – $28.97
Yanmar Parts:
129550-12112 Intake Manifold Gasket – $10.00
129550-11310 Valve Cover Gasket – $13.00
124465-44840 Thermostat Housing Gasket (2 Each)-$5.00
129486-42021 Water Pump Gasket -$10.00
129795-49551 Cover Gasket- $3.00
129001-42005 Water Pump – $229.00
129155-49801 Thermostat – 71C – $25.00
129150-49811 Thermostat Gasket – $5.00
24321-000300 Thermostat O Rings -$5.00
Dorman Brass Freeze/Casting Plugs – .887 Dia – $25.00 (10 Each)
Marathon Parts:
30 feet of 7910 1-1/4 ID Thermoid Bellowsflew Hose $349.00 (Big River Rubber and Gasket Company)
Final Charge Coolant NAPA Concentrate – 2 gallons – $34.00
Distilled Water – 2 Gallons – $2.00
Muddy water, rust, pieces of the hose steel wire, debris….all came out of Yanmar block. Mud and debris came out of Marathon installed radiator.
The radiator sits at an angle in the center of bus so I flushed the top to bottom several minutes till water ran clean and then the bottom to top till the water ran clean. When I flushed the radiator, I install a new in-line water filter on garden hose to take out and minerals during flush.
Getting the coolant completely back into system was challenging because of radiator angle. I filled engine block system with 50 / 50 mix through tank radiator and then disconnected the upper Marathon radiator hose at block and filled it with 50/50 coolant. Doing this put 2 gallons of coolant in system. Started generator and measured temps at thermostat housing for 3 minutes. Then, to eliminate air in system while I disconnected upper coolant line disconnected at block again …took garden hose and push coolant through Marathon radiator until it came out thermostat housing. Got really good temperature readings at top of Marathon radiator and bottom of Marathon radiator 20 degrees F apart. Generator is running about 5-8 degrees cooler not 157 Degrees F.
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2 Replies
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Where did you order the turbo to intake hose from?
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General Parts Manager ssandridge@loftinequip.com o: (281) 310-6858 x312 c: (281) 222-9084 Loftin Equipment
Susan Sandridge
281-310-6858 X312
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