Valve Guide: Service and Repair

NOTE: Special Tools Required: 5027, 5028, 5160, 5218, 5224.

REPAIR PROCEDURES:

Replacing Valve Guides:
1. Heat cylinder head to 100 ±10 C (212 ±18 F).

Valve Guide Removal:

2. Use drift 5218 to press out guides. Press toward the combustion chamber.
3. Make sure guide has not seized during removal. If so valve guide bore must be reamed to oversize.

Valve Guide Reamers:

Valve Guide:

- Use Valve Guide,they are marked with grooves. Make sure the new guide has the same number of grooves as the old guide.

No. of grooves Size
0 Standard
1 Oversize 1
2 Oversize 2
3 Oversize 3

Valve Guide Installation:

4. Press in new valve guide:
- Cylinder head should be at room temperature.
- Use drift 5027 for intake valves and drift 5028 for exhaust valves.
5. Press in guide until drift contacts cylinder head to obtain correct height.
CAUTION: Press force must be at least 9000 N (2000 lbs.) if press force is lower, the guide must be removed. Ream guide seat to next oversize and press in guide of corresponding size.

Part Numbers for valve guide reamers:

Oversize Reamer
1 5161
2 5162
3 5163

Tool #5224, Reamer:

6. Clean inside of valve guide:
- Use reamer 5224.
- Also reamer 5164 can be used.

NOTE: Valve and seat must be ground in after replacing valve guide.