MHU TO references.pdf

Stand clear of lift boom and load during lift cycle. Ensure test load is centered on manipulator head. Failure to comply may result in injury to personnel.

NOTE

Test weight fabrication material is optional, either Concrete, Cast Iron or Construction Steel. Due to the manufacturing tolerances of cast iron or damaged concrete test weights, it may be necessary to supplement the test weights. Use a locally fabricated steel plate, one per block, to achieve the required weight of 7000 pounds (+250/-0 pounds) The thickness of the steel plate may vary based on the amount of supplemental weight required. Steel plates will conform to the corrosion control standards of Technical Order (TO) 35-1-3 if they are subject to outdoor use/storage.

be accomplished.

b. Place a 7,000 pound test load (+250/-0 pounds) weight on load table and secure.

d. With load still raised, shut unit off.

e. Simulate a hose failure by depressing the lift boom control lever (9) to the lower position. This will release pressure in the lines from the counterbalance valve back to the tank. The load should not drop. However, a slight settling may

f. Start unit and lower load.

g. Visually inspect for leaks and structural cracks.

h. After all operations or tests have been completed, remove weight and position the Lift Truck in the parking area assigned. Lower the lift boom. Place the directional control lever (6) in NEUTRAL. Place the parking brake valve lever in the ON position. Place ignition switch in the OFF position.

9.7 RCU Operation. Refer to Paragraph 5.11 and operate the lift boom and manipulator head using the RCU. Verify all functions of the RCU are operable. There shall be no noticeable delay between pressing the RCU switch and response to the selected function.

9.8 Drift Test for Uncommanded Movement.

Uncommanded movement could be experienced when accomplishing this test. Perform test in a clear area and ensure that all applicable safety precautions contained in AFOSH Standard 91-100 and AFOSH Standard 91-10 are observed while accomplishing this test. Failure to comply could result in injury to personnel and/or damage to equipment.

Locate lift truck in appropriate testing location. Ensure hydraulic tank is full and accomplish the following steps:

NOTE

Refer to WP 998 00.

TO 35D5-3-8-41

WP 006 00

NOTE

Test weight fabrication material is optional, either Concrete, Cast Iron or Construction Steel. Due to theTest weight fabrication material is optional, either Concrete, Cast Iron or Construction Steel. Due to the manufacturing tolerances of cast iron or damaged concrete test weights, it may be necessary to supplement the Test weight fabrication material is optional, either Concrete, Cast Iron or Construction Steel. Due to the manufacturing tolerances of cast iron or damaged concrete test weights, it may be necessary to supplement the test weights. Use a locally fabricated steel plate, one per block, to achieve the required weight of 7000 poundstest weights. Use a locally fabricated steel plate, one per block, to achieve the required weight of 7000 pounds (+250/-0 pounds) The thickness of the steel plate may vary based on the amount of supplemental weight(+250/-0 pounds) The thickness of the steel plate may vary based on the amount of supplemental weight required. Steel plates will conform to the corrosion control standards of Technical Order (TO) 35-1-3 if they arerequired. Steel plates will conform to the corrosion control standards of Technical Order (TO) 35-1-3 if they are subject to outdoor use/storage.

be accomplished.

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5 REPAIR INSTRUCTIONS.

Instructions for removal, disassembly, cleaning, inspection, repair, installation, and testing of major Lift Truck assemblies, subassemblies, and components are presented in following Subordinate Work Packages.

NOTE

Whenever major repair work is done on the Lift Truck hydraulic system a load test is required. Refer to WP 006 00 for testing procedures.

5.1 Lift Truck Disassembly. Refer to Figure 2 for location of Lift Truck components. The following guidance is provided for complete repair of the end item:

DIESEL FUEL, ASTM D975/MIL-T-5624, JP-4, JP-8 3

a. Drain the hydraulic tank, the hydrostatic drive, and fuel tank in accordance with WP 005 00.

b. Remove sheet metal housing assemblies in accordance with SWP 007 01.

c. Remove the battery in accordance with SWP 007 02.

d. Disconnect and remove electrical components in accordance with SWP 007 02.

e. Remove hydraulic system tubing, hoses, etc. in accordance with SWP 007 03.

f. Remove hydraulic components in accordance with SWP 007 04.

g. Remove and disassemble/repair the hydraulic tank in accordance with SWP 007 04.

h. Remove the engine and pump assemblies in accordance with SWP 007 05.

i. Remove and disassemble/repair the hydrostatic drive in accordance with SWP 007 06.

j. Remove and disassemble/repair the accelerator mechanism in accordance with SWP 007 07.

k. Remove and disassemble/repair the instrument panel in accordance with SWP 007 08.

l. Remove and disassemble/repair the front wheels in accordance with SWP 007 09.

m. Remove and disassemble/repair the outboard frame section in accordance with SWP 007 09.

n. Remove and disassemble/repair the differential and rear wheels in accordance with SWP 007 10.

o. Remove and disassemble/repair the steering installation in accordance with SWP 007 11.

p. Remove and disassemble/repair the brake installation in accordance with SWP 007 12.

q. Remove and disassemble/repair the lift boom in accordance with SWP 007 04.

r. Remove and disassemble/repair the manipulator head in accordance with SWP 007 13.

s. Remove and disassemble/repair the fuel tank in accordance with SWP 007 14.

t. Remove and disassemble/repair the front wheel assemblies in accordance with SWP 007 15.

u. Remove and disassemble/repair the RCU in accordance with SWP 007 16.

TO 35D5-3-8-41

WP 007 00

NOTE

Whenever major repair work is done on the Lift Truck hydraulic system a load test is required. Refer to WP 006Whenever major repair work is done on the Lift Truck hydraulic system a load test is required. Refer to WP 006 00 for testing procedures.