557-5072 Electrical Kit Installation Instructions {1408}
- Mini Hydraulic Excavator
- 307.5 (S/N: GW71-UP)
- 308 (S/N: GG81-UP; GX81-UP)
- 308.5 (S/N: GZ81-UP)
- 309 (S/N: GG91-UP; GW91-UP)
- 310 (S/N: GWT1-UP)
- 308 (S/N: GG81-UP; GX81-UP)
Introduction
This Special Instruction provides the procedure to install the electrical kit on certain 307.5 - 310 next gen Mini Hydraulic Excavators.
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.
Safety Section
Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.
A person must be alert to potential hazards. This person must also have the necessary training, skills, and tools to perform these functions properly.
Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance of a potential hazard.
Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Avoid using a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar.
Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures.
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| Illustration 1 | g00104545 |
Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or to the controls before you service the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.
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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility. |
Required Parts
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| Required parts | |||
|---|---|---|---|
| Item | QTY | Part Number | Part Name |
| 1–3 | 1 | Boom Harness | |
| 2–7 | 1 | Cab Harness | |
| 3–1 | 1 | Bracket | |
| 4–4 | 1 | Lockwasher | |
| 5–5 | 1 | Nut | |
| 6–2 | 2 | Bolt | |
| 7–10 | 2 | Rocker Switch | |
| 8–8 | 14 | Cable Strap | |
| 9–9 | 1 | Harness | |
| 10–6 | 19 | Strap | |
Installation Procedure
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| Illustration 2 | g06429843 |
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Location of bolts and bracket (1) (2) | |
- Remove bolts from current bracket on machine left side of stick. Place bracket (1) behind current bracket and install new two bolts (2) and torque to standard metric torque.
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Illustration 3 g06429849 12-pin connector and lock-washer for installation
(3)557-5069 Boom Harness As
(4)159-9496 Lockwasher
(5)159-9495 Nut - Install harness assembly (3) into keyed hole and secure with lockwasher (4) and nut (5). Tighten nut (5) to
29 N·m (21.39 lb ft) to31.5 N·m (23.23 lb ft) . Route the harness along the aux line and secure with a tie strap at each end.Show/hide table
Illustration 4 g06429907 Tie strap locations
(3)557-5069 Boom Harness As
(6)178-3620 StrapShow/hide table
Illustration 5 g06429918 Tie strap locations
(3)557-5069 Boom Harness As
(6)178-3620 Strap - Route harness assembly (3) following the hydraulic lines on the machine and using tie straps (6) to connect to them. Refer Illustration 4 and 5 for routing and tie straps (6) suggested locations.
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Illustration 6 g06429932 Parts removed for clarity
(3)557-5069 Boom Harness As
(6)178-3620 Strap - Continue routing harness (3) through the machine swing casting. The harness will be installed on top of the hoses routed through the swing casting and it will be attached to hoses using tie traps (6) as shown in Illustration 6.
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Illustration 7 g06429977 Parts removed for clarity
(3)557-5069 Boom Harness As - Route harness (3) through the frame passages as shown in Illustration 7.
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Illustration 8 g06429994 Parts removed for clarity
(3)557-5069 Boom Harness As
(7)557-5070 Cab Harness As - Connect harness (3) to harness (7) as shown in Illustration 8.
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Illustration 9 g06430007 Parts removed for clarity
(7)557-5070 Cab Harness As
(8)7K-1181 Cable Strap - Route harness (7) from the connection point of harness (3) to the back of the operator station following hoses and harness. using cable straps (8) to secure harness routing as shown in Illustration 9.
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Illustration 10 g06430037 (A) 521-6030 Access Cover As
(7)557-5070 Cab Harness As - Remove access cover assembly (A) to gain access to the back of the operator station.
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Illustration 11 g06430058 Cab-Chassis connector - Assemble the pins of cab harness (7) to the Cab-Chassis connector as follows:
- Insert terminal T1 (A274–BK) into cavity 83
- Insert terminal T2 (J992-YL) into cavity 84
- Insert terminal T3 (J993–PK) into cavity 85
- Insert terminal T4 (J994-GY) into cavity 86
- Insert terminal T5 (J995–PU) into cavity 87
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Illustration 12 g06430089 Parts removed for clarity
(B)518-9388 Cover - Remove cover (B) from inside the operator station to gain access to the Cab-Chassis connector as shown in Illustration 12.
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Illustration 13 g06430102 Parts removed for clarity
(9)557-5071 Harness - Assemble the pins of cab harness (9) to the Cab-Chassis connector as follows:
- Insert terminal T1 (A274–BK) into cavity 83
- Insert terminal T2 (J992-YL) into cavity 84
- Insert terminal T3 (J993–PK) into cavity 85
- Insert terminal T4 (J994-GY) into cavity 86
- Insert terminal T5 (J995–PU) into cavity 87
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Illustration 14 g06430122 Parts removed for clarity
(C) Connector
(9)557-5071 Harness - Route the portion of harness (9) with two connector into the left-hand side console.
- Uninstall switch bank. Install connector MU-CI (wires yellow/pink/pink) on the machine left and connector MU-C2 (wires gray/pink/purple) on the machine right.
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Illustration 15 g06430135 (10) 499-1809 Rocker Switch - Reinstall switch bank. Install two rocker switches (10) into the switch positions. The switches are to be positioned as shown in Illustration 15.
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Illustration 16 g06430403 Parts removed for clarity
(8)7K-1181 Cable Strap
(9)557-5071 Harness - Route the other end of harness (9) behind the seat and into the right-hand side of the operator station, following and securing the harness to the main cab harness using cable straps (8).
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Illustration 17 g06430415 Parts removed for clarity
(E)513-2511 Cover - Remove cover (E) to gain access to the power and ground connection as shown in Illustration 17.
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Illustration 18 g06430421 Parts removed for clarity
(F) Cap - Remove cap (F) from connector on main harness.
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Illustration 19 g06430428 Parts removed for clarity
(9)557-5071 Harness - Connect harness (9) connector to the cab harness.
- Install the cover (B) and cover (E) back in the operator station.
- Install cover assembly (A) back of the operator station.
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