Lull 944E-42 Service Manual - Manual (Page 46)

General Information, Specifications and Maintenance
2.30 Model 644E-42/944E-42 Rev. 6/04
2.12 AFTER SERVICE STARTUP AND
CHECKS
2.12.1 After Service Startup
Note: Refer to the Owners/Operators Manual for engine
cold-start procedures.
1. Check fluid levels.
2. Connect the negative (-) battery cable(s) to the
battery or batteries (if it is disconnected).
3. Start and idle engine. Check for leaks from hydraulic
components, engine, axles, transmission, brakes
and reservoirs or tanks. Check the levels of all fluids
and lubricants.
4. Purge the hydraulic system of air by operating all
vehicle functions through their entire range of motion
several times.
5. Check for proper operation of all components.
6. Retract all cylinders fully (transfer carriage must be
forward). Turn the engine OFF and check the
hydraulic reservoir level. Recheck the level when the
hydraulic oil is cold.
7. Replace the hydraulic filter if required.
2.12.2 After Electrical/Electronic Component
Service
1. Check the torque of all fasteners securing replaced
electrical/electronic components.
2. Check wiring connections to components.
3. Verify that wiring components are dry and free of
moisture.
4. Check connectors for broken, frayed, or loose wires.
5. Check for brittle or frayed wire shielding.
6. Connect the negative (-) battery cable terminal(s) to
the battery or batteries (if it is disconnected).
7. Check the operation of the replaced component(s).
2.12.3 After Hydraulic Component Service
1. Check torque of fasteners on replaced components.
2. Check that hoses and tubes are properly attached,
positioned, and torqued properly.
3. If a hydraulic component failed and contaminated
the system, flush the system, clean the hydraulic oil
reservoir (tank), and replace the hydraulic oil filter.
4. After normal hydraulic component maintenance,
check the hydraulic fluid level and add fluid as
required.
5. Start engine and bleed hydraulic system of air.
Operate all boom functions through their full range of
motion several times. Cycle the hoist and extend
cylinders to bleed air from the system. Visually
check for leaks.
6. Check operation of all systems in the hydraulic
circuit by operating the controls through all functions
several times.
2.12.4 After Brake System Service
1. Check the oil level in the axle and replenish with oil
as required.
2. Bleed the brakes.
3. Check brake pressure.
4. Check brake operation.
2.12.5 After Fuel System Service
1. Drain and flush fuel tank; if it was contaminated.
2. Bleed fuel system.
3. Fill fuel tank with fresh, clean fuel, as required.