Beretta V6-173 2.8L (1989)
Some HM-282/HYDRA-MATIC 5TM40 Transaxles built between November 1, 1988, and April 7, 1989, may exhibit a knocking or tapping noise in all
gears and neutral with the clutch pedal out. This condition is Gear Noise.
PROPER DIAGNOSIS IS IMPORTANT: A knocking or tapping noise which is most often heard in neutral with the clutch pedal in is clutch rattle.
SERVICE PROCEDURE:
(Figures 2, 3, 4, 5)
If your diagnosis indicates that the transaxle exhibits a knocking or tapping in all gear ranges with the clutch pedal out and it was built between
November 1, 1988, and April 7, 1989:
Inspect the gear cluster, input gear (17). If it does not have a groove as indicated in Figure 2, install the part described in Service Parts Information.
Inspect the reverse idler gear (103) and reverse gear/5th synchronizer assembly (25) for chipped or deformed teeth (refer to Figure 5). To check for
deformity, compare the angle and position of the teeth with a known good gear. If either component exhibits a chipped or deformed condition, replace
both parts as described in Service Parts Information.
Inspect the shift cable, at the center shift console, for binding where it enters the sheath. (The shift cable is the thicker of the two shift control cables.) A
bent cable could result in binding, difficult shifting, and/or inaccurate shift detent feel, especially when shifting into reverse. Replace the cable if it is
bent or kinked.
SERVICE PARTS INFORMATION:
Part Number
Description
8672955
Cluster, Input Gear (Non-Turbo) (17)
8672956
Cluster, Input Gear (Turbo) (17)
8672179
Gear, Reverse Output/5th Synchronizer Asm (25)
14080558
Gear, Reverse Idler (103)
8672918
Package, Overhaul
The overhaul package must be installed when replacing any of the above parts.
Parts are currently available through GMSPO.
SERVICE MANUAL REFERENCE:
Refer to the HM-282/HYDRA-MATIC 5TM40 Unit Repair section of your Service Manual.
