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Old 05-27-2017, 05:36 AM
v8volvo v8volvo is offline
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Join Date: Jun 2009
Location: Montana, USA
Vehicle: '86 745, '83 764
Posts: 1,618
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That depends, what do you want to do? Go through them and get them back on the road? Basic maintenance? Other?

To get a baseline of condition, start with these:
- Get the diesel greenbooks so that you have the info you need.
- Timing belts - replace if date and mileage of last change is not known. You will need special tools to do it correctly. If you can document a relatively recent prior replacement, confirm it was done with correct procedures and equipment at that time, if not or if you're not sure, then it's on you to get the stuff and check timing settings and crankshaft dampener bolt torque, even if you choose not to replace the belt.
- Valve clearance, check/adjust as needed
- Fluids and filters all around, need to use the correct large oil filter and full synthetic diesel-rated oil, I use 0W40 year round but some folks prefer 5W30 or 5W40, all are fine. When replacing the fuel filter, ensure that the inner O-ring comes off with the old filter, sometimes they don't. Prefill the new filter with clean, new fuel or fuel treatment or ATF, lube the sealing surfaces with a clean finger, screw on. Sanitary conditions are required whenever the inlet side of the fuel system is open, the diesel injector pump and injectors have zero tolerance for contamination.
- Very careful check of the cooling system, hoses, radiator, etc. Check thermostat operation and replace if needed. Learn the air burping procedure and use it if you do anything that requires draining coolant.
- General functional check, do the motors start quickly and smoothly, with minimal smoke? Or are they choppy for the first minute or two? If so, check glow plugs and replace where needed. Look/smell for any fuel leaks under the hood, common culprits are the small return lines between the injectors, sometimes the fuel pump needs some O-rings as well. Check for any oil leaks.

If they both run that's a good sign. Looking forward to hearing how they turn out.
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86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
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