OTC 6685 User manual

Cam Tool Part No. Page
Camshaft Gear Holder................................ 536174.................2
Camshaft Gear Holder................................ 536176.................2
Camshaft Holding Tool............................... 536172............... 14
Camshaft Sprocket Holding Tool................... 536181............... 14
Camshaft Sprocket Holding Tool................... 527056.................6
Camshaft Sprocket Wrench.......................... 527046.................9
Camshaft Sprocket Wrench.......................... 527049............... 12
Camshaft Timing Alignment Pin.................... 536254.................3
Camshaft Timing Alignment Pins................... 527045............... 10
Crankshaft Pulley Holder ............................ 536178.................5
Timing Belt Adjuster................................... 536173.................1
Timing Chain Holder.................................. 536186.................8
Timing Chain Holder.................................. 536187.................8
Timing Chain Holder.................................. 536265............... 15
Timing Chain Tensioner Loading Tool............ 527061-1 ..............7
Timing Chain Tensioner Loading Tool............ 527061-2 ..............7
Timing Chain Tensioner Retainer .................. 535255.................4
Timing Chain Tensioner Retainer .................. 532195............... 11
Timing Chain Tensioner and Shoe Retainer ..... 532174............... 13
©Bosch Automotive Service Solutions Inc. 532208 Rev. B
GM 4-Cylinder Cam Tool Set
Operating Instructions

CAUTION: To prevent personal injury, wear eye
protection that meets ANSI Z87.1 and OSHA standards.
No. 536173
Timing Belt Adjuster
Application: 1.6L 4-cylinder engine used in
2004-2007 Chevrolet Aveo
1. Loosen the water pump retaining bolts.
2. Using the timing belt adjuster No. 536173,
rotate the water pump counterclockwise
(CCW) to loosen the timing belt or
clockwise (CW) to tighten the timing belt.
3. Rotate the water pump clockwise (CW)
until the adjusting arm pointer of the timing
belt automatic tensioner is aligned to the
notch in the timing belt automatic tension
bracket. See Figure 2.
4. Tighten the water pump bolts.
Figure 1
Figure 2
536173
Automatic
Tensioner
Adjusting
Arm Pointer
1

CAUTION: To prevent personal injury, wear eye
protection that meets ANSI Z87.1 and OSHA standards.
No. 536174 & 536176
Camshaft Gear Holders
Applications:1.9L DOHC 4-cylinder VIN 7 engine used in
2000-2002 Saturn SC-2, SL-2, SW-2
NOTE: No. 563174 & No. 536176
camshaft gear holders must be used
together. No. 536174 mounts on the
front of the cam gear. No. 536176
mounts on the rear of the gear.
1. Remove both front camshaft bearing
caps.
2. Assemble No. 536176 camshaft gear
holder to the back side of the camshaft
gears.
3. Assemble No. 536174 camshaft gear
holder to the cam gears and No. 536176
with four (4) bolts. Torque the bolts to
19 ft. lbs. (25 N•m).
4. Install and tighten two (2) bolts that
attach the No. 536174 camshaft gear
holder to the engine front cover.
5. While holding each camshaft in place
with a 24 mm open end wrench,
carefully remove the camshaft timing
gear retaining bolts and washers. See
Figure 2.
6. Loosen and remove the remaining
camshaft bearing caps. Slide the
camshaft rearward to remove from the
timing gears.
Figure 1
536174
536176
Figure 2
536174
536176
24 mm
wrench
No. 536174
No. 536176
2

CAUTION: To prevent personal injury, wear eye
protection that meets ANSI Z87.1 and OSHA standards.
No. 536254
Camshaft Timing Alignment Pin
Applications: 1.9L VIN 7 4-cylinder engine used in
1991-2002 Saturn SC-2, SL-2, SW-2.
1.9L VIN 8 4-cylinder engine used in
1995-2002 Saturn SC-1, SL-1, SW-2
1. Bring the camshaft(s) up to TDC #1 cylinder. Verify TDC by installing No. 536254 camshaft timing
alignment pin(s) through the hole(s) in the cam sprocket and into the hole(s) in the cylinder head.
2. Install the timing chain onto the cam gear.
3. Remove the No. 536254 camshaft timing alignment pin(s).
NOTE: For 1.9L VIN 8 engines, one (1) No. 536254 pin is required.
For 1.9L VIN 7 engines, two (2) No. 536254 pins are required.
1.9L VIN 8 Engine
Figure 1
536254
1.9L VIN 7 Engine
Figure 2
536254
3