Installing the 337-3991 Radio Installation Gp {7338} Caterpillar

Compact Track Loader:

279C (S/N: MBT1-UP)

289C (S/N: JMP1-UP)

299C (S/N: JSP1-UP)

299D (S/N: HCL1-UP)

299D XHP (S/N: NLC1-UP)

Multi Terrain Loader:

287C (S/N: MAS1-UP)

277C (S/N: JWF1-UP)

297C (S/N: GCP1-UP)

Skid Steer Loader:

246C (S/N: JAY1-UP)

256C (S/N: DWS1-UP)

262C (S/N: MST1-UP)

272C (S/N: RED1-UP)

272D (S/N: GSL1-UP)

272D XHP (S/N: SHY1-UP)

Introduction

ReferenceSpecial Instruction, REHS4045, "Installing Caterpillar Radios in C Series Compact Track Loaders, Multi Terrain Loaders, and Skid Steer Loaders"

This special instruction provides the information for installing the 337-3991 Radio Installation Gp on the listed machines. Upon completing the installation, the machine will be ready for the installation of a Caterpillar radio.

Parts Information

Illustration 1	g02140835
The 337-3991 Radio Installation Gp (1) 5C-7261 Nut (M8X1.25) (2) 5P-4116 Hard Washer (3) 6V-7357 Bolt (M6X1) (4) 8E-1118 Antenna As (5) 8T-4142 Bolt (M5X0.8) (6) 8T-4224 Hard Washer (7) 8Y-5947 Fastener (8) 9U-8746 Coaxial Cable Assembly (9) 168-8772 Radio Speaker As (10) 195-0936 Threaded Insert (11) 200-5728 Radio Harness As (12) 258-4039 Spacer (13) 258-4067 Cover (14) 258-4074 Bracket (15) 258-4367 Bracket

Installation Procedure

1. Remove the 258-4021 Headliner .

   Note: Remove the ten 8Y-5947 Fasteners that secure the headliner to the ROPS. Discard the fasteners.

2. Install speakers (9) per Step 2.a through Step 2.c.
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   Illustration 2	g01805478
   (5) 8T-4142 Bolt (9) 168-8772 Radio Speaker As (15) 258-4367 Bracket

   1. Assemble each speaker (9) to a bracket (15) with four bolts (5). See Illustration 2.

      Tighten the bolts to a torque of 3.5 ± 0.5 N·m (2.5 ± 0.4 lb ft).

   2. Connect the wire leads from the 258-4101 Panel Harness As to the terminal for the speakers. Refer to Table 2.
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      Table 2

      Speaker	Connector	Wire Number	Wire Color
      Left Speaker	L-T7	508-L68	Purple
      	LT-8	509-L17	White
      Right Speaker	L-T9	511-L69	Brown
      	L-T10	512-L71	Green

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   Illustration 3	g01805520
   View of the installation of the left speaker (3) 6V-7357 Bolt (6) 8T-4224 Hard Washer (15) 258-4367 Bracket

   3. Attach each bracket (15) to the 258-4352 Plate with two bolts (3) and two hard washers (6). See Illustration 3.

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Illustration 4	g01805573
(7) 8Y-5947 Fastener

3. Reinstall the 258-4021 Headliner . Use ten new fasteners (7) for attaching the headliner to the ROPS. See Illustration 4.

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Illustration 5	g01805615
(4) 8E-1118 Antenna As (8) 9U-8746 Coaxial Cable Assembly (11) 200-5728 Radio Harness As (13) 258-4067 Cover

4. Place antenna (4), cable assembly (8), and harness (11) inside radio cover (13). See Illustration 5.

   Then, place spacer (12) inside radio cover (13) .

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Illustration 6	g01805734
(7) 8Y-5947 Fastener (13) 258-4067 Cover (14) 258-4074 Bracket

5. Attach bracket (14) to the back of radio cover (13) with a fastener (7). See Illustration 6.

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Illustration 7	g01805781
(1) 5C-7261 Nut (2) 5P-4116 Hard Washer (14) 258-4074 Bracket

6. Place radio cover (13) in position on the back of the 258-4433 Cab Liner Gp . Then, attach bracket (14) to the stud that is provided on the 258-4200 Canopy As with nut (1) and hard washer (2). See Illustration 7.

   Tighten the nut to a torque of 15 ± 3 N·m (11 ± 2 lb ft).