Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Power Train Caterpillar

Installation Procedure

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Illustration 1	g00694510

1. Use Tooling (D ) in order to install undercarriage (11) to the machine. The weight of undercarriage (11) is 2631 kg (5800 lb). Install as many of bolts and washers (7) and (9) as possible.
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   Illustration 2	g00694479

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   Illustration 3	g00694486

2. Remove the bolt that holds Tooling (D). Loosen bolt (13). Slide Tooling (D) out of undercarriage (11). Remove Tooling (C) from the support assembly (hard bar) (5).
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   Illustration 4	g00695032

3. Remove Tooling (C ) from support assembly (hard bar) (5) and install the last remaining bolt (9). Connect electrical connector (6). Install the cover over electrical connector (6). Torque bolts (9) to 820 N·m (600 lb ft). If a torque wrench is not available use the procedure at the end of this story to tighten bolts (7) and (9).
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   Illustration 5	g00694419

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   Illustration 6	g00694435

4. Remove Tooling (A) and (B) from rear drive wheel (8). Rotate rear drive wheel (8) in order to install bolts (7). Torque the bolts to 820 N·m (600 lb ft). If a torque wrench is not available use the procedure at the end of this story to tighten bolts (7) and (9).
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   Illustration 7	g00694374

5. Install guard (3) on support assembly (hard bar) (5). Install two tie straps (2) on cover (3).
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   Illustration 8	g00694786

6. Remove straps (1) and remove Tooling (E).

End By:

1. Tighten the belt. Refer to Disassembly and Assembly, "Belt - Detension and Tension" for the machine that is being serviced.

2. Install the side counterweights. Refer to Disassembly and Assembly, "Counterweight (Side) - Remove and Install" for the machine that is being serviced.

Torque-Turn Method for Tightening Bolts

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Illustration 9	g00695112

1. Tighten each bolt to an initial torque of 135 N·m (100 lb ft).
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   Illustration 10	g00695118

2. Draw a line on the undercarriage that identifies the point on one of the flats on each bolt head.
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   Illustration 11	g00695130

3. Draw a line on the socket.

4. Identify the length of the bolt that is being tightened. Use table 2. Use the appropriate amount of required rotation in order to torque the bolt to 820 N·m (600 lb ft). Draw a second line in order to mark the rotation stopping point. Draw the line in order to be seen when the socket is placed over the bolt head.

5. Place the socket on the bolt head so that the line that is on the socket matches the first line that was drawn on the undercarriage.
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   Illustration 12	g00695137

6. Tighten each bolt until the line on the socket matches the second line on the undercarriage.

7. Tighten as many of bolts (5) as possible to a torque of 820 N·m (600 lb ft). Rotate the rear drive wheel until the remaining bolts and washers can be installed and tightened.