PRO-SPOTTER
ABS/ATC SYSTEM
TICO Manufacturing
Service Manual
9-3
BOBTAIL PROPORTIONING
VALVE
Removal
1.
Park and prepare tractor for service. (See “Park
Tractor Safely” on page 1-3.)
CAUTION
2.
Release air system pressure. (See “RELIEVING AIR
SYSTEM PRESSURE” on page 8-6.)
Figure 9-2: Bobtail Proportioning Valve
3.
Install identification tags and disconnect air lines (1—
6). Close all openings using caps and plugs.
4.
Remove cap screws (7), washers (8), lock nuts (9),
and bobtail proportioning valve (10).
5.
Repair or replace components as necessary.
Inspection
• Clean all parts of dirt and debris.
• Inspect air lines, fittings, and valves for leaks, holes,
cracks, and loose connections. Replace parts found
to be unserviceable.
• Check all threaded components for damaged or
stripped threads. Repair light damage with thread
chasers. Replace parts found to be unserviceable.
Installation
Installation is the reverse of the removal procedure.
• Test operation of brake system.
• Avoid personal injury from explosion. Air
system components may contain pressurized
gases. Exposure to excessive heat may
cause components to explode.
• Avoid personal injury from high-pressure
gases or debris. High-pressure release of
gases or debris from a pressurized system
can cause penetrating injuries. Relieve
system pressure from air system before
servicing.
1
Air Line
4
Air Line
7
Cap Screw (2 used)
10
Bobtail Proportioning Valve
2
Air Line
5
Air Line
8
Washer (4 used)
3
Air Line
6
Air Line
9
Lock Nut (2 used)
1
TPS-112
2
3
4
5
6
10
7
8
9
Summary of Contents for Pro-Spotter
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