12
GZ461A
12. Inspect the area around the drain plug and oil filter
for leaks.
Front Differential - Rear
Drive Lubricant
To check lubricant, use the following procedure.
1. Remove the fill plug; the lubricant level should be
one inch below the plug threads.
PR530A
2. If low, add SAE approved 80W-90 hypoid gear lube
as necessary.
To change the lubricant, use the following procedure.
1. Place the vehicle on level ground.
2. Remove each fill plug.
3. Drain the lubricant into a drain pan by removing in
turn the drain plug from each.
HDX255
PR530B
4. After all the lubricant has been drained, install the
drain plugs and tighten to 45 in.-lb.
5. Pour the appropriate amount of recommended lubri-
cant into the fill hole.
6. Install the fill plug.
NOTE: If the lubricant is contaminated with water,
inspect the drain plug, fill plug, and/or bladder.
Driveshaft/Coupling
The following drive system components should be
inspected periodically to ensure proper operation.
A. Spline lateral movement (slop).
B. Coupling cracked, damaged, or worn.
C. Universal joints worn or missing bearings.
Nuts/Bolts/Cap Screws
Tighten all nuts, bolts, and cap screws. Make sure rivets
holding components together are tight. Replace all loose
rivets. Care must be taken that all calibrated nuts, bolts,
and cap screws are tightened to specifications.
CAUTION
Do not over-fill the engine with oil. Always make sure
that the oil level is not above the upper mark.
Rear Drive