GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 Wave 🢒 Engine 🢒 Engine Mechanical - 1.4L (LDT) 🢒 Valve Clearance Adjustment

Measurement
  1. Remove the cylinder head cover. Refer to Valve Rocker Arm Cover Replacement.

    2. Object Number: 2049370 Size: SH
  2. Rotate the crankshaft pulley clockwise.
  3. Align the notches (1) between the pulley and the cover.

    4. Object Number: 2049546 Size: SH
  4. Measure the valve clearance (2) and (6). Rotate the crankshaft pulley clockwise through 180 degrees.
  5. Measure the valve clearance (3) and (7). Rotate the crankshaft pulley clockwise through 180 degrees.
  6. Measure the valve clearance (4) and (8). Rotate the crankshaft pulley clockwise through 180 degrees.
  7. Measure the valve clearance (1) and (5). Rotate the crankshaft pulley clockwise through 180 degrees.
  8. If the measured values are out-of-specifications, replace the new valve tappets.

    9. Specifications

        • Intake Side: 0.21-0.29 mm (Nominal Value: 0.25 mm)
        • Exhaust Side: 0.27-0.35 mm (Nominal Value: 0.30 mm)
  9. Determine the tappet size. Refer to Valve Clearance Determine Tappet Size.
  10. Replace the valve tappets if necessary.

Determine Replacement Size Tappet

    Object Number: 2049549 Size: SH
  1. Remove the old tappet.
  2. Locate the ID number inside old tappet.
  3. Locate the ID number in the following table and record the value.
  4. Perform the following calculation to determine the replacement tappet size.

    5. Value (old tappet) + Measured Clearance - Nominal Value = X (new tappet)

    Example:

    • ID of old tappet = 20 = 3.20 mm and clearance was 0.31 mm
    • 3.20 mm + 0.31 mm - 0.25 mm = 3.265 mm
    • 3.265 mm (value) = 27X (ID number) = 55353766 (part number)

Tappet Selection

Part Number

ID Number

Value (mm)

24465260

04

3.060-3.050

24465261

06

3.050-3.070

24438041

08

3.070-3.090

24438145

10

3.090-3.110

24438146

12

3.110-3.130

24438147

14

3.130-3.150

24438148

16

3.150-3.170

24438149

18

3.170-3.190

24438150

20

3.190-3.210

24438151

22

3.210-3.230

55353764

24X

3.230-3.244

55353765

25X

3.244-3.258

55353766

27X

3.258-3.272

55353767

28X

3.272-3.286

55353768

30X

3.286-3.300

55353769

31X

3.300-3.314

55353770

32X

3.314-3.328

55353771

34X

3.328-3.342

55353772

35X

3.342-3.356

55353773

36X

3.356-3.370

55353774

38X

3.370-3.384

55353775

39X

3.384-3.398

55353776

41X

3.398-3.412

55353777

42X

3.412-3.426

55353778

43X

3.426-3.440

55353779

45

3.440-3.460

55353780

47

3.460-3.480

55353781

49

3.480-3.500

55353782

51

3.500-3.520

55353783

53

3.520-3.540

55353784

55

3.540-3.560

55353785

57

3.560-3.580

55353786

59

3.580-3.600