Model 4700 Maintenance Manual
Section 4. Scheduled Maintenance Every 180 Days or 500 Pump Hours
Perform the following tasks every 180 days/500 pump hours, whichever comes first. Component
What to do
Hydraulic Hoses
Inspect all hydraulic hoses for leaks, nicks, cuts, chafing, and bulges. Replace damaged hoses as soon as possible. Inspect fittings for leaks. Repair any leaks immediately. Inspect OTM hoses for correct tension. Make sure OTM pulleys spin freely and show no signs of wear.
Hydraulic Reservoir
Check fluid level.
Lift Chains
Check adjustment. Inspect for excessive stretch or wear. Lubricate.
Lights
Check for correct operation.
Lubrication
Apply grease to all fittings. Apply lithium grease to the travel direction lever ball joint on the steering column. Coat all chains with spray lubricant.
Mast
Wipe old grease off mast uprights and apply new grease. Examine mast bearings. Inspect rails for abnormal wear, metal flakes, or shavings. Repair any grooves worn in the mast deeper than 1/8 in. (3 mm). Check upright and guide shoe (puck) adjustment.
Motors
Check cable lugs to make sure they are tight to the terminal studs. Replace any cable that shows signs of excessive heat. Check sensor wires for sound connection and condition. Blow out the inside of the motor with compressed air.
Overhead Guard
Inspect guard for physical damage. If structurally damaged, replace the guard.
Power Amplifiers and Fan
Check torque on power amplifier connections. Make sure power amplifier heat sink fins are free of debris and that air flows freely through them.
Seat Belt
Check for signs of wear, fraying, or damage.
Seat Switch
Check for correct activation and deactivation of the seat switch.
Shorts to Frame
Check for electrical shorts to frame. Wipe compartments clean.
Static Strap
Make sure static strap is not worn or broken. Clean debris from straps. Check resistance of resistor in standoff; should be 200 to 250k ohm. EE Labeled trucks require a phosphor bronze static strap; do not use steel braided cable on EE labeled lift trucks.
Steering
Inspect hoses and cylinder for leaks. Check steer cylinder mounting holes, screws, and dowel pins for damage.
Switches
Check all switches for correct operation and adjust as needed.
Travel Alarm
If equipped, check for correct operation.
Ventilation Slots
Make sure ventilation slots in the chassis are clear of obstructions and debris. Clean the fan filter.
Warning Decals
Replace missing, illegible, or damaged decals.
Warning Light
If equipped, check for correct operation.
Publication 1160093, Issued: 20 May 2013
Refer to
Page 4-9
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