is typically cited as best of class for clutches. If your flywheel is beyond re-use, then shop hard for a decent Japanese or US manufactured unit. If not terribly worn see if your local machine shop can just re-surface the old one.
Flywheel bolts are sinlge use only item and contact JLEMOND for a full set of new OEM bolts. And like Harry said, be sure to use blue loctite on the the threads to prevent oil leaks.
Highly recommend you plan on flushing and refilling the cooling system, maybe twice. Its cheap insurance against the overheating thing -which nearly always leads to head gasket failure and/or cracked head.
That little 4ZE1 motor is a decent power plant and don't let anybody tell you otherwise. However, it is very finicky about them damn vacuum lines, and about the sensors and wiring. This makes 'em somewhat temperamental after nearly 30 years on the road.
Lucky for you, you've come to the Planet where you can get the best guidance around.
This thread has some info on them vac lines and should help you get things sortedviewtopic.php?f=1&t=78054&p=716835&hilit=Vacuum+hose+diagramFluid quantities:
Manual 5 speed, 2.95 L (3.2 US Quarts) SAE5W-30 ... or 10W-30
Transfer case, 1.45 L (1.6 US Quarts) SAE5W-30 ... or 10W-30
Front Axle: 1.5 L (1.7 US Quarts) using SAE90 typically ... or Mobil-1 75w-90
Rear Axle: 1.8 L (2.0 US Quarts) using SAE90 typically ... or Mobil-1 75w-90
Fuel tank: 21.9 US Gallons
Cooling System: 8.0 L (2.11 US Gallons)
Member squatch posted a pic of the trans when he was updating the vent and vent lines - and I stole this pic from him. Arrows point to fill plugs.
For the trans ... probably best to drain and replace the oil in there. Be sure to use a decent engine oil - either Mobil-1, Rotella, or Delo 400 - in the 10w-30 weight.
There are two drain plugs there, one on the trans and one on the xfer case ... both on the bottom.
Likewise there are two fill plugs, one for trans and one for xfer case ... both on passenger side.
Make sure you can get the fill plug off first - otherwise you'll drain it and then not be able to refill.
Also, if you have good google skilz you can find the Factory Service Manual (FSM) for an '88 on the interwebs in PDF format. And nothing beats the FSM for these trucks.
Post up more pics when you get the chance ... we do love some fresh Trooper [email protected] And ... Welcome to the Planet, FNG !!!
(favorite new guy)