1999/11/01 Caterpillar


Improved Air Conditioning Hose Routing Increase Hose Service Life {1808}

Usage:


416C (1WR, 1XR, 4ZN, 5YN),
426C (1CR, 1ER, 1MR, 1NR, 1YR, 1ZR, 6XN, 7WN),
428C (2CR, 8RN),
436C (1FR, 1GR, 1PR, 1RR, 2AR, 2BR, 8TN, 9JN),
438C (1JR, 1TR, 2DR, 9KN) Backhoe Loaders

The 112-6219 Bracket has been improved for backhoe loaders in order to mount the new 171-5284 Bracket. The 171-5284 Bracket was added to 145-7179 Air Conditioner Lines in order to support the 104-9493 Air Conditioner Hose. This hose should no longer rotate or foul against other components while the engine is running.

This change was effective with the machines listed in Table 1. This change is adaptable to earlier machines by performing the rework procedure.

Rework Procedure


Illustration 1.
Left Side of Engine.

112-6219 Bracket (8).
Clip (9) for Engine Oil Dipstick.
Clip (10) for transmission Fill Tube.

1. Remove transmission fill tube and the engine oil dipstick from the 112-6219 Bracket (8). See Illustration 1.


Illustration 2.

Bracket (8).
Bracket (8).
Washer (12).

2. Remove the 112-6219 Bracket (8) from the engine. See Illustration 2.


Illustration 3.
The 112-6219 Bracket.

Dimension A = 82 mm (3.228 in).
Dimension B = 30 mm (1.181 in).
Diameter C = 11.5 mm (.452 in).

3. Drill an 11.5 mm (.452 in) diameter hole in the 112-6219 Bracket, 82 mm (3.228 in) (A) from the right edge and 30 mm (1.181 in) (B) below the top edge. See Illustration 3.

4. Install the 112-6219 Bracket on the engine. See Illustration 2.


Illustration 4.

Left Side of Bracket (8).
171-5284 Bracket (3) mounted in the machine.

5. Install the 171-5284 Bracket (3) and the clip (9) for engine oil dipstick using 8T-4908 Bolt (6), Nut (2), and Washer (7). See Illustration 4.

6. Install the clip (10) for the transmission oil fill tube. See Illustration 1.


Illustration 5.

7C-4354 Clip (4).
171-5284 Bracket.
8T-4136 Bolt (5).
8T-4121 Washer (1).

7. Place the 7C-4354 Clip (4) around the hose. Attach the Clip (4) to the 171-5284 Bracket (3) using 8T-4136 Bolt (5) and 8T-4121 Washer (1).

Caterpillar Information System:

1999/11/01 Battery Care And Maintenance {1401}
1999/11/01 Master Battery Disconnect Switch Is Available {1400}
1999/11/01 Battery Drain Can Cause Hard Starting {1400}
1999/10/25 New Flywheel Housing Gasket For 3408 And 3412 Machine Engines {1152}
1999/10/25 New Hydraulic Accumulator Assembly Procedure Increases Service Life {5077}
1999/10/25 Brake Life Severely Reduced When Performing Production Compaction Cycles In Travel (Third) Speed {4251}
1999/10/25 New Mounting For Engine Enclosure Doors Improves Service Life {7263}
1999/10/25 Improved Engine Enclosure Now Available {7263}
1999/10/18 New Measuring Wheel Used {4201}
1999/10/18 New Parts Used To Improve Chain Clearance {4192,7228}
1999/10/18 New Belts Used To Reduce Hose Wear {5057,5605}
1999/10/18 Correction To The Converter Outlet Pressure {3030,3101}
1999/11/01 Schematic Available For 793C Off-Highway Trucks {7601,7566}
1999/11/01 Correction To Disassembly And Assembly, Module, SENR9145 {7258,7258}
1999/11/01 Correction To Disassembly And Assembly Module, RENR3402 {7258,7258}
1999/11/01 New Bearing Improves Differential Shafts Reliability {4066}
1999/11/01 Special Instruction, REHS0434-02, Is Available {0374,6800}
1999/11/01 Customer Site License And Annual Subscriptions For VIMSpc99 Software Available {7601}
1999/11/01 Improved Hydraulic Line For Pilot Control Increases Service Life {5057}
1999/11/01 Corrections To Operation And Maintenance Manual, SEBU7207 And SEBU7255 {1000,1463,1700}
1999/11/01 Additional Cable Straps Used On Control Switch Wiring {2359}
1999/11/01 New Screw Used For Pendulum Arm Covers {7228}
1999/11/01 Kits Available To Improve Lift Cylinder Operations {5102,5057}
1999/11/01 Control Valve Improves Tilt Cylinder Operation {5104,5132}
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