| Table 1: | Noise When Vehicle Is In Drive |
| Table 2: | Noise When Vehicle Is Coasting |
| Table 3: | Intermittent Noise |
| Table 4: | Constant Noise |
| Table 5: | Noise When Vehicle Turns |
Problem | Action |
|---|---|
The differential drive pinion to the ring rear backlash is excessive. | Adjust the differential drive pinion to the ring backlash. Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The differential drive pinion and ring gear are worn. | Replace the differential drive pinion and the ring set. Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The differential drive pinion bearings are worn. | Replace the bearings. Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The differential drive pinion bearings are loose. | Adjust the bearings. Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The differential drive pinion end play is excessive. | Adjust the differential drive pinion end play. Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The differential bearings are worn. | Replace the differential bearings. Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The differential bearings are loose. | Adjust the bearings. Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The rear axle lubricant is low. | Fill with synthetic rear axle lubricant. Refer to Fluid and Lubricant Recommendations . Spicer Eaton call 1-800-TCM-HELP Meritor call 1-800-535-5560 |
The rear axle lubricant is incorrect. | Replace the rear axle lubricant with the proper synthetic lubricant. Refer to Lubricant Change . |
The rear axle housing is bent. | Replace the rear axle housing. Refer to Rear Axle Housing Replacement (Single) or Rear Axle Housing Replacement (Tandem) . |
Problem | Action |
|---|---|
Rear axle noises heard on drive will usually be heard also on coasting, although not as loud. | Adjust or replace the differential drive pinion gear and the ring gear set. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
Differential drive pinion gear and ring gear too tight (audible when slowing down and disappears when driving). | Adjust the differential drive pinion gear to the ring gear backlash. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
Problem | Action |
|---|---|
The ring gear is warped. | Replace the differential drive pinion gear and the ring gear set. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
The differential case bolts are loose. | Tighten the differential case bolts. Refer to Fastener Tightening Specifications . |
Problem | Action |
|---|---|
A flat spot exists on the differential drive gear or the ring gear teeth. | Replace the differential drive pinion gear and the ring gear set. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
A flat spot exists on the bearing. | Replace the bearing. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
The differential drive pinion gear splines are worn. | Replace the differential drive pinion gear and the ring gear set. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
The rear axle (shaft) housing cover locator holes are worn. | Replace the rear axle shaft. Refer to Rear Axle Disassemble . |
The wheel hole studs are worn. | Replace the wheel hub studs. Refer to Wheel Hub Bolt Replacement . |
The rear axle shaft is bent. | Replace the rear axle shaft. Refer to Rear Axle Disassemble . |
Problem | Action |
|---|---|
DEFINITION: A noise is present when the vehicle turns. | |
The differential side gears and the pinion gears are worn. | Replace the worn parts. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
The differential spider is worn. | Replace the worn parts. Spicer Eaton call 1-800-TCM-HELP Meritor 1-800-535-5560 |
The rear axle shaft splines are worn. | Replace the rear axle shafts. Refer to Rear Axle Disassemble . |
