DRIVE SHAFT OR UNIVERSAL JOINT UNUSUALLY NOISY WHEN OPERATING (CONT)

TM 9-2320-366-20-2

g1. DRIVE SHAFT OR UNIVERSAL JOINT UNUSUALLY NOISY WHEN OPERATING (CONT)

KNOWN INFO

TEST OPTIONS

Visual inspection

Drive shaft properly lubricated.

REASON FOR QUESTION

Universal joint(s) bearing cap

Are M1086/M1089 coupler

screws tight.

bearing and attaching

Drive shaft may operate

Universal joints OK.

hardware secure?

unusually noisy if M1086/

Drive shaft OK.

M1089 coupler bearing or

attaching hardware is not

POSSIBLE PROBLEMS

secure.

Faulty M1086/M1089 coupler

bearing or attaching hardware.

Faulty M1086/M1089

intermediate front drive shaft.

Tighten M1086/M1089 coupler bearing

YES

nuts to 66-81 lb-ft (90-110 Nm).

Notify DS Maintenance.

2-1828

Change 1