Chevrolet Silverado / GMC Sierra. Manual — part 2893
DRIVE CHAIN, DRIVE SPROCKET, AND DRIVEN SPROCKET CLEANING AND INSPE
INSPECTION
or pitting is detected. Refer to Front Output
Shaft Front and Rear Bearing Replacement.
9
Transfer Case Front Output Shaft Seal Surface
Tip: Inspect for pitting, excessive wear, or
damage.
10
Transfer Case Front Output Shaft Front Bearing
Surface
Tip: If the bearing is removed, inspect for
excessive wear, damage, or if the bearing has spun
on the shaft.
11
Transfer Case Front Output Shaft Driven Sprocket
Engagement Splines
Tip: Witness marks at the location of the sprocket
is normal.
12
Transfer Case Front Output Shaft Rear Bearing
Surface
Tip: If the bearing is removed, inspect for
excessive wear, damage, or if the bearing has spun
on the shaft.
13
Transfer Case Front Output Shaft Hole Plug
Tip: Replace the plug if removed. Refer to Front
Output Shaft Front and Rear Bearing
Replacement.
14
Transfer Case Front Output Shaft Rear Bearing
Assembly
Tip: Replace the bearing if roughness, brinelling,
or pitting is detected. Refer to Front Output
Shaft Front and Rear Bearing Replacement.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 33: Drive Chain, Drive Sprocket, and Driven Sprocket Cleaning and Inspection
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
Preliminary Procedure
Inspect all components or sub-components and perform any repair procedure
necessary to fix the damage. If the damage cannot be repaired, replace the component
or sub-component as indicated.
Replace any components if damage is found in this procedure. The sprockets must be
replaced as a pair.
Clean all components in cleaning solvent and air dry.
1
Transfer Case Front Output Shaft Drive Sprocket
Bearing Assembly
Tip: Replace the bearings if roughness, brinelling, or
pitting is detected. Refer to Front Output Shaft
Drive Sprocket Bearing Replacement .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
HIGH/LOW PLANETARY CARRIER CLEANING AND INSPECTION
2
Transfer Case Front Output Shaft Drive Sprocket
Bearing Bore
Tip: If the bearing is removed, inspect for excessive
wear, damage, or if the bearing has spun in the bore.
3
Transfer Case Two/Four Wheel Drive Synchronizer
Sleeve Engagement Teeth
Tip: Inspect the engagement teeth for chips or
excessive wear.
4
Transfer Case Front Output Shaft Drive Sprocket
Tip:
Inspect for chipped teeth, excessively worn
gear surfaces, and debris embedded in the root
of the teeth.
Witness marks at the location of the chain is
normal.
5
Transfer Case Front Output Shaft Driven Sprocket
Tip:
Inspect for chipped teeth, excessively worn
gear surfaces, and debris embedded in the root
of the teeth.
Witness marks at the location of the chain is
normal.
6
Transfer Case Front Output Shaft Drive Chain
Assembly
Tip: Inspect for loose link pins, binding or stiff links,
debris embedded in the links, or worn teeth surfaces.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 34: High/Low Planetary Carrier Cleaning and Inspection
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
Preliminary Procedure
Inspect all components or sub-components and perform any repair procedure
necessary to fix the damage. If the damage cannot be repaired, replace the component
or sub-component as indicated.
Clean all components in cleaning solvent and air dry. Do not spin the planetary gears
with compressed air.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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