LUG 4D1599 - Caterpillar

Since the truck engine must be running to perform this adjustment, be sure that the truck is parked in a SAFE POSITION with the park brakes appropriately set prior to beginning maintenance. Also be sure never to place yourself in a dangerous position near moving parts.
Purge any air from the cylinders as follows:
Start the engine and allow to charge the accumulator system fully.
Rotate the steering wheel from the full right to the full left positions and back until the entire steering system is free from air.
Stop the engine.Inspection and Repair
The disassembled cylinders may be serviced as follows:
Clean all metal components with clean solvent. Dry with compressed air.
Inspect the components for excessive wear, scorning, and scratches. Repair or replace as required.Note: Refer to Special Instruction, SEBF8072, "Inspection and Salvage of Hydraulic Cylinder Components".
Table 3 lists the critical dimensions for the Unit Rig Mining Truck steering cylinders.
Table 3
84092K (MH)     SAP 1452452     431-6015 Cylinder As    
(1)     Cylinder Bore    
152.4 + 0.076 - 0.00 mm (6.00 + 0.003 - 0.00 inch)    
(2)     Rod OD    
88.77300 0.00508 mm (3.495 0.0002 inch)    
(3)     Piston OD    
150.495 0.127 mm (5.925 0.005 inch)    
84092F (MM)     SAP 1467008     472-5035 Cylinder As    
(1)     Cylinder Bore    
114.3 + 0.076 - 0.00 mm (4.5 + 0.003 - 0.00 inch)    
(2)     Rod OD    
63.373 0.005 mm (2.495 0.0002 inch)    
(3)     Piston OD    
113.665 0.025 mm (4.475 0.001 inch)    
29089 (MJ)     SAP 1452502     472-5023 Cylinder As    
(1)     Cylinder Bore    
139.725 0.025 mm (5.501 0.001 inch)    
(2)     Rod OD    
139.294 0.025 mm (5.484 0.001 inch)    
(3)     Piston OD    
73.025 mm (2.875 inch)    
84092J (MJ)     SAP 1452480     472-5036 Cylinder As    
(1)     Cylinder Bore    
146.075 0.025 mm (5.751 0.001 inch)    
(2)     Rod OD    
145.415 0.025 mm (5.725 0.001 inch)    
(3)     Piston OD    
74.625 mm (2.938 inch)    
84092E (MH)     SAP 4012120        
(1)     Cylinder Bore    
152.4 + 0.076 - 0.00 mm (6.0 + 0.003 - 0.00 inch)    
(2)     Rod OD    
88.773 0.005 mm (3.495 0.0002 inch)    
(3)     Piston OD    
150.495 0.127 mm (5.925 0.005 inch)    
84092G (MP)     SAP 1454758        
(1)     Cylinder Bore    
177.8 + 0.076 - 0.00mm (7.0 + 0.003 - 0.00inch)    
(2)     Rod OD    
101.524