CIPI UNDERCARRIAGE Arrangements: 1667049, 2372904, 3Q6481, 6Z7988, 6Z7989, 9Q5032, 9Q5040, 9Q5043, 9Q5046, 9Q5047, 9Q5066, 9Q5074, 9Q5097, 9Q5098, 9Q5116, 9Q5134, 9Q5136, 9Q5142, 9Q5147, 9Q5148, 9Q5149, 9Q5172 and 9Q5204 Caterpillar

Illustration 1	g00580239

Output torque ... 67,750 N·m (49,965 lb ft)

Input speed ... 2600 rpm

Input torque ... 730 N·m (538 lb ft)

Ratio ... 89:1

Static brake torque

Standard ... 500 N·m (369 lb ft)

Optional ... 890 N·m (657 lb ft)

Brake release pressure ... 760 kPa (110 psi)

Maximum brake release pressure ... 34,300 kPa (5000 psi)

Approximate weight ... 436 kg (960 lb)

Drive motor type ... Dual displacement, slipper style piston

Track motor displacement per revolution

Low speed ... 143 cc (8.72 in³)

High speed ... 87 cc (5.31 in³)

Speeds ... 2

(1) Apply 9S-3263 Thread Lock on the threads of 12 bolts.

(2) Apply 9S-3263 Thread Lock on the threads of 20 bolts.

Torque for 20 bolts ... 900 ± 100 N·m (660 ± 75 lb ft)

(3) Apply 1U-8846 Gasket Maker to the surfaces of gear (3).

(4) After you install the seven pins, make stake marks near the opening of each pin hole. An example is shown in View A.

(5) Apply 9S-3263 Thread Lock on the threads of ten bolts.

Torque for ten bolts ... 900 ± 100 N·m (660 ± 75 lb ft)

(6) At assembly, O-rings of the floating seals and all surfaces in contact with the O-rings must be clean and dry. Apply a thin coat of oil on the contacting surfaces of the metal seals before installation.

(7) Use the plates to achieve the correct clearance "D". Clearance "D" equals 1.0 mm (0.04 inch) to 2.0 mm (0.08 inch).

94-0577 Plate ... 7.0 mm (.28 inch)

94-0578 Plate ... 8.0 mm (.31 inch)

94-0579 Plate ... 9.0 mm (.35 inch)

94-0580 Plate ... 10.0 mm (.39 inch)

Grease may be used in the counterbore to retain the spacer at assembly.

(8) Torque for two plugs ... 80 ± 10 N·m (59 ± 7 lb ft)

(9) Apply 5P-3931 Anti-Seize Compound to the surfaces in contact with the pins.

Use the following procedure to adjust the preload of bearing (12) :

1. Place a load "P" of 4000 kg (8820 lb) on bearing (12) .

2. Rotate the housing (13) in order to seat the bearing.

3. Reduce load (P) to 1000 ± 100 kg (2200 ± 220 lb).

4. Measure dimension (B) .

5. Measure dimension (C) of gear (10) .

6. Use a maximum of two shims (11) to achieve the correct clearance.

Note: If two shims (11) are used, place the thinnest shim next to gear (10) .

(11) Thickness of shim

110-7234 Shim ... 0.15 mm (.006 inch)

110-7235 Shim ... 0.3 mm (.012 inch)

110-7236 Shim ... 0.4 mm (.016 inch)

110-7237 Shim ... 0.5 mm (.020 inch)

110-7238 Shim ... 0.6 mm (.024 inch)

110-7239 Shim ... 0.7 mm (.028 inch)

110-7240 Shim ... 0.8 mm (.031 inch)

110-7241 Shim ... 1.0 mm (.039 inch)

110-7242 Shim ... 1.6 mm (.063 inch)

After assembly, apply 98 kPa (14 psi) of air pressure through the fill plug opening and sustain the air pressure for at least 30 seconds. There should not be any air leak for at least 30 seconds.