IT28G Integrated Toolcarrier and 928G Wheel Loader Clutch (Reverse and Second) Caterpillar

Illustration 1	g01149953
Clutches are shown in a compressed state.

Note: The dimension for callout (1) is only the thickness of six new discs, six new plates, and one new end plate. The dimension does not include the running clearance of the clutch pack. See the procedure to measure the running clearance.

(1) Clutch pack for the REVERSE gear

Thickness of six new discs, six new plates, and one new end plate for the REVERSE clutch ... 50.00 ± 1.04 mm (1.969 ± 0.041 inch)

Thickness of one new 6Y-1300 Disc ... 4.00 ± 0.08 mm (0.158 ± 0.003 inch)

Minimum allowable thickness for reusability ... 3.66 mm (0.144 inch)

Thickness of one new 8E-5556 Plate ... 3.00 ± 0.08 mm (0.118 ± 0.003 inch)

Thickness of one new 8E-5726 Plate ... 8.00 ± 0.08 mm (0.315 ± 0.003 inch)

Note: The dimension for callout (2) is only the thickness of six new discs, six new plates, and one new end plate. The dimension does not include the running clearance of the clutch pack. See the procedure to measure the running clearance.

(2) Clutch pack for the SECOND gear

Thickness of six new discs, six new plates, and one new end plate for the SECOND gear ... 48.00 ± 1.09 mm (1.890 ± 0.043 inch)

Thickness of one new 6Y-7968 Disc ... 4.00 ± 0.08 mm (0.158 ± 0.003 inch)

Minimum allowable thickness for reusability ... 3.66 mm (0.144 inch)

Thickness of one new 6Y-5631 Plate ... 3.00 ± 0.08 mm (0.118 ± 0.003 inch)

Thickness of one new 8E-5707 Plate ... 6.00 ± 0.13 mm (0.236 ± 0.005 inch)

(3) 6Y-7818 Spring

Length under test force ... 34.50 mm (1.358 inch)

Test Force ... 1245 ± 62 N (280.0 ± 14.0 lb)

Free length after the test ... 50.37 mm (1.983 inch)

Outside diameter ... 78.86 mm (3.105 inch)

(4) Running clearance for the REVERSE clutch ... 3.64 ± 1.60 mm (0.143 ± 0.063 inch)

Note: The maximum allowable clearance is 7.66 mm (0.302 inch) for used components.

See the procedure to measure the running clearance.

(5) Running clearance for the SECOND clutch ... 3.67 ± 1.70 mm (0.144 ± 0.067 inch)

Note: The maximum allowable clearance is 7.69 mm (0.303 inch) for used components.

See the procedure to measure the running clearance.

(6) 129-8732 Spring

Length under test force ... 9.10 mm (0.358 inch)

Test force ... 4.9 ± 0.7 N (1.10 ± 0.20 lb)

Free length after test ... 10.1 mm (0.40 inch)

Outside diameter ... 6.82 mm (0.269 inch)

(7) Confine each ring in a 45 mm (1.8 inch) gauge for the inner diameter. Expand each ring against the gauge. The ring end gap for each ring is 0.63 ± 0.20 mm (0.025 ± 0.008 inch). The maximum radius for the outer diameter and side corners of the ring ends 0.20 mm (0.008 inch).

Note: Lubricate all of the seals with the lubricant that is being sealed.