Manitowoc Grove TMS700E Service And Maintenance Manual page 309

TMS700E SERVICE MANUAL
Operating and Leakage Checks
1. Shut down the engine and slowly reduce the pressure.
2. The switch should activate at about 5.20 bar (75 psi).
The air gauges and indicators in the cab can be used to
test the switch.
3. With system pressurized, coat the switch with a soap
solution and observe for bubbles. No leaking is
permitted.
Removal
1. Chock the wheels and completely depressurize both
systems.
2. Disconnect the electrical lead and unscrew the switch
from the fitting.
Installation
1. Screw the switch into the fitting and connect the
electrical leads.
Preventive Maintenance
Every 16,000 km (10,000 mi) or monthly do the procedures
as outlined under Operating and Leakage Checks above.
Stop Light Switch
Operational Test
Depress the brake pedal and observe that the stop lights
illuminate.
Leakage Test
With pressure applied, coat the switch with a soap solution
and observe for bubbles. No leaks are permitted.
Removal
Disconnect the electrical leads and unscrew the switch from
the dual brake valve with a wrench.
Installation
Screw the switch into the dual brake valve with a wrench and
connect the electrical leads.
Air Pressure Gauge
Removal
1. Chock the wheels and completely depressurize both
systems.
2. Remove the hardware securing the cover to the front
console and remove the cover.
3. Gain access to the rear of the air pressure gauge. Tag
and disconnect the nylon tubes from the rear of the
gauge. Tag and disconnect the electrical connector.
Grove
4. Remove the hardware securing the gauge to the front
console and remove the gauge.
Installation
1. Install the air pressure gauge in the front console with
the attaching hardware.
2. Connect the two nylon tubes to the fittings in the rear of
the gauge and connect the electrical connector as per
removal tags.
3. Install the front console cover and secure with attaching
hardware.
Functional Check
Start the engine and observe the air pressure gauge. The red
arrow on the gauge (primary) should rise first until a pressure
reading of about 5.90 bar (85 psi) at which time the green
arrow (secondary) should begin to climb. Both arrows should
level off at about 7.60 bar (110 psi).
Safety Valve
Removal
1. Chock the wheels and completely depressurize the
system.
2. Using a wrench, unscrew the valve from the fitting.
Installation
Screw the valve into the fitting.
Operating and Leakage Checks
With the system pressurized, pull the valve stem and air
should exhaust from the valve exhaust port. Release the
stem and air flow should stop. Replace the safety valve if it
does not pass the operation test.
Coat the valve and fitting with a soap solution and observe
for leaks. Replace the valve if excessive leaking is present.
Check the valve every 160,000 km (100,000 mi), 3600 hrs,
or yearly.
Automatic Drain Valve
Removal
1. Chock the wheels and completely depressurize both
systems.
2. Unscrew the drain valve from the bottom of the reservoir.
Disassembly
1. Unscrew and remove the cover and sealing ring.
2. Remove the valve guide, inlet valve, and exhaust valve.
3. Remove the adaptor and filter assembly.
4. Remove the filter and retainer.
Published 01-29-2015, Control # 512-01
UNDERCARRIAGE
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