Manitowoc Grove TMS700E Service And Maintenance Manual page 307

TMS700E SERVICE MANUAL
3. Disconnect and tag the air lines connected to the air
compressor.
4. Unbolt and remove the compressor from the engine.
Installation
1. Bolt the air compressor to the engine.
2. Connect air lines as per removal tags.
Air Governor
Removal
1. Chock the wheels and depressurize both primary and
secondary air circuits.
2. Access the air governor which is located beside the air
dryer under the storage mat.
3. Tag and disconnect the air lines connected to the
governor.
4. Remove the bolts, nuts and washers securing the air
governor mounting plate to the engine. Remove the
mounting plate and air governor.
5. Remove the washers and nuts securing the air governor
to the mounting plate and remove the air governor.
Installation
1. Position the air governor on the mounting plate and
secure with lockwashers and nuts.
2. Position the mounting plate on the engine and secure
with bolts, nuts and lockwashers.
3. Connect air lines as per removal tags.
Operational Test
1. Start the engine and pressurize the system. Check the
governor cut-out pressure with either the panel gauge or
a test gauge (it should be 9.30 bar (135 psi)). At the cut-
out pressure, the compressor is unloaded and the air
dryer is purged.
2. Apply a series of brake applications with the engine
running until the governor cuts-in. The cut-in pressure is
7.90 bar (115 psi). Governor adjustment is as follows:
a. Unscrew the cover at the top of the governor.
b. Loosen the adjusting screw locknut.
c. Turn the adjusting screw counterclockwise to raise
the setting or clockwise to lower the setting.
d. Tighten the adjusting screw locknut to lock the
adjustment.
3. Repeat step 2 as necessary.
Grove
Leakage Test
1. Leakage checks on the governor are made at the
exhaust port with a soap solution in both the cut-in and
cut-out positions. In the cut-in position, the leakage can
be through either the inlet valve or bottom piston
grommet. In the cut-out position, leakage can be through
the exhaust valve seat or upper piston grommet. The
soap solution test on the exhaust port is done to verify a
leak and determine its location.
2. If the governor does not function properly or has
excessive leakage, repair or replace the air governor.
Check the applicable Grove Parts Manual.
Preventive Maintenance
Every 500 hours or 24,000 km (15,000 mi).
1. Clean or replace the governor filters.
2. If cleaning, use a cleaning solvent that will not have a
detrimental effect on metal or rubber.
3. Always replace filters that are removed with new ones.
Every
(100,000 mi), disassemble the governor and clean all
parts.
Air Dryer
Removal
1. Turn ignition switch off.
2. Turn the battery disconnect switch in the battery
compartment to the OFF position.
3. Chock the wheels and completely depressurize the air
system.
4. Tag and disconnect all air and electrical lines connected
to the air dryer.
5. Remove the bolts, nuts and washers securing the dryer
to the carrier frame and remove the dryer.
6. If the dryer is to be replaced with a new one, remove the
fittings from the old dryer.
Installation
1. Install the fittings on the new dryer.
2. Position the air dryer on the mounting studs on the
carrier frame and secure with the bolts, nuts and
washers.
3. Connect the air and electrical lines as per removal tags.
Run the lines downhill so that pockets of water don't
collect in the lines and freeze.
Preventive Maintenance
The recommended desiccant cartridge change is 3 years but
can be shorter or longer depending on conditions.
Published 01-29-2015, Control # 512-01
UNDERCARRIAGE
operating 3,000 hours or 160,000 km
8
8-55