Meritor Axles
Notice: Use regulated pressure when lubricating the knuckle assemblies, otherwise damage could result to the knuckle caps.
Hold a high-pressure grease gun on each fitting until fresh grease appears. See Fig.. This will ensure that all of the old contaminated grease has been forced out.
Note: Pump lubricant into each grease fitting until fresh grease comes out at A.
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Grease Fitting
Fig. 1, Meritor Axle Grease Fittings
When lubricating Meritor axle knuckle pin bushings at the initial maintenance (IM) interval, first wipe the lube fittings clean. Then, slowly feed multipurpose chassis grease (NLGI grade 1 or 2) into each bushing area while turning the wheels from extreme right to left, and back again (lock-to-lock). This will eliminate small air pockets and improve grease distribution.
Note: The grease seal will accept the grease pressure without damaging the seal, and is designed to have grease pumped out through it during lubrication. Even if grease leaks out around the top or bottom plate, continue pumping until new grease is seen at the seal on the bushing opposite the grease fitting.
When lubricating knuckle pin bushings after the IM maintenance interval, first wipe the lube fittings clean. Then apply multipurpose chassis grease until new grease is seen at the grease seal on the bushing opposite the fittings.