89 Peterbilt Grease nipple locations???????

[smhoward27]

I bought a 89 Peterbilt 375 Three axle dump truck.
Now I know it has been a while since she was greased and lubed so I think I'll take care of that this weekend. Only problem is, there are so many grease nipples and I know I am going to miss some.
Is there anywhere that shows a diagram or any info on all the grease nipple locations?
I have tried to look online, but to no success.
Help! Please!!

[K and M]

your front end including springs,steering gear box, steering shaft slip joint and u-joints, drive shafts u-joints and slip joint are the most important,specially in a dump or off road truck, brakes and s-cam rod bearings. If off road a lot I would grease my spring hangers,king pin knuckles and steering assembly and drive shafts every 20 hours instead of 40. Your throwout bearing may hang down under the front of the transmission or may be a remote under the cab below the drivers door,(if it is a remote your throwout arm nipple will be with it) or remote in engine compartment drivers side frame rail in front of firewall. Make sure you look under the cab on drivers side above the step and air can or fuel tank (whatever the case may be). If it's been a long time you may have to really muscle that zirk onto the nipple to get it to go. make sure nipple is clean before application, I take a finish nail with me for stubborn grease fittings and give the seat a little push if it wont accept grease.

[boone315]

Speaking of nipples, I was looking for one the other day,,, my clutch and tranny, never lubed a meritor before, found it way up on the side of the tranny, weird location

[Sinister]

I drove a truck with a meritor transmission for a while.

God awful creation it was. I heard Spicer is worse though.

[boone315]

I drove a truck with a meritor transmission for a while.

God awful creation it was. I heard Spicer is worse though.

They take some getting used to, very quick shifting.

[K and M]

I drove a 81 freightliner with a a balanced and blueprinted 3406A with nitrous and liquid propane injection. It was a class c tractor puller and it had a 14 speed spicer that actually translated into 25 forward gear selections (5 on the tree x5 on the nob). It was called the green machine if you ever saw it. If it wasn't pulling a sled at a show on the weekend it was pulling a wilson convertible hopper for Morrison Trucking. That tranny made a ton of noise, like someone that couldn't shift, when you rolled back the nob and caught a new hole on the tree.

[smhoward27]

So is there anywhere I could find this info in print form, with diagrams etc?

[K and M]

only if you can obtain the original build sheet. some zerks are in close proximity to where most usually are. The rest depends on the specs of the purchaser or dealer who ordered it. Just keep hunting(and cleaning) till you find them all. usually if you find a spot on a truck that has some nasty dirty dusty greasy residue on it, you will find a grease fitting nearby.

[smhoward27]

What is the best grease to use, and where is best place to get it for the best price?

[K and M]

I use mystik jt-6 hi temp (NLGI#2), Schaeffers lubes are very good also. Home page Schaeffer Oil 3.0 | Industrial Lubricants | Diesel Fuel Additive | Synthetic Motor Oils

That was weird........ mystiks website showed up as home page, so if you click on that it will take you to their site.