Service manual

181 CID (3.0L) 4 CYLINDER GM ENGINE

SERVICE MANUAL NUMBER 26

90-861329--1 MARCH 1999 Page 3A-31

Several different types of equipment are available for refacing valves. The recommendation

of the manufacturer of the equipment being used should be carefully followed to attain

proper results.

50695

Exhaust Intake

a-.372 In. (9.45 mm)

b-1/32 [.031] In. (0.79 mm) Min.

c-.341 In. (8.16 mm)

d-1/32 [.031] In. (0.79 mm) Min.

Reassembly

1. Lubricate valve guides and valve stems with engine oil.

2. Install each valve in the port from which it was removed or to which it was fitted.

3. Install valve guide seal (intake valve only) over valve stem and push down until seated

against head.

4. Set valve spring (with damper installed) and cap in place.

5. Place retainer on intake valve and/or rotator on exhaust valve.

6. While compressing valve spring with valve spring compressor, install oil seal in lower

groove of valve stem, making sure seal is not twisted. A light coating of oil will help

prevent twisting.

72884

V6 Shown

a-Valve Spring Compressor (J-8062)

Index