Suzuki XL7 2007 Service Manual page 1138

3B-9 Differential:
Noisy in Drive
Inspect for proper gear oil levels prior to performing system diagnosis.
Loose propeller shaft mounting bolts
Worn propeller shaft constant velocity joint
Worn or loose center bearing assembly
Worn universal joints
Worn axle shaft constant velocity joints
Transfer case noise
Worn or damaged axle mounting bushings (side)
Worn or damaged axle mounting bushing (rear)
Loose rear mounting bracket
Loose or damaged prop guard
Bearing noise within axle assembly
Gear set whine noise within axle assembly
Shutter or moan at slow speeds or slow turns
Cause Correction
Tighten the bolts as required. Refer to "Fastener
Tightening Specifications - Propeller Shaft: ".
Replace the propeller shaft assembly. Refer to "Propeller
Shaft Replacement: ".
A worn propeller shaft constant velocity joint may create a
clicking, grinding, or snapping type noise.
Replace the center bearing assembly as required. A worn
center bearing may cause vehicle vibration or a grinding,
squealing type of noise.
Refer to "Propeller Shaft Replacement: ".
Replace the universal joints as required. A worn universal
joint may create a clicking or snapping type of noise.
Refer to "Propeller Shaft Replacement: ".
Replace/repair the constant velocity joints as required. A
worn axle shaft constant velocity joint may create a
clicking, grinding, or snapping type of noise.
Refer to "Symptoms - Rear Drive Axle".
Refer to Diagnostic Starting Point - Transfer Case
procedure.
Replace bushings as required.
A worn bushing may create a clunk type of noise during
acceleration or deceleration.
Refer to "Differential Housing Support Bushing
Replacement (Front)" "Differential Housing Support
Bushing Replacement (Rear)".
Replace bushings as required.
A worn bushing may create a clunk type of noise during
acceleration or deceleration.
Check bushing orientation; the tuning slots must be in
proper position.
Tighten the bracket bolts as required.
Refer to "Fastener Tightening Specifications - Rear Drive
Axle".
Repair or replace as required.
A loose dust shield may contact the propeller shaft
assembly and create a scraping or grinding type of noise.
A grinding roar type of noise will increase or decrease
relative to the vehicle speed.
1. Check for proper fluid level. Refer to "Rear Axle
Lubricant Replacement".
2. If the noise continues, repair or replace the unit as
required.
A whine type of noise will increase or decrease relative to
the vehicle speed, approximately 80-90 km/h (50-56
mph).
1. Check for the proper fluid level. Refer to "Rear Axle
Lubricant Replacement".
2. Repair or replace the unit as required.
A shutter or moan type of noise in slow sharp turns.
1. RDM could be contaminated with the wrong fluid type/
water.
2. Replace the fluid; fill as required and retest under
conditions. Refer to "Rear Axle Lubricant
Replacement".
3. Replace the drum.