SAF Tire Pilot Plus Troubleshoot Manual

XL-AA20023TS-en-US Rev A · 2019-04-04 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF,
and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
Figure 2
SAF
®
Tire Pilot Plus
™
Pressure Management System March, 2019
Troubleshooting Guide
All Trailer Axles
Refer to the link here for a troubleshooting video.
https://vimeo.com/user82815417/review/262250351/e88ebf4fc5
Symptom:
Warning Light on
Problem:
System air pressure low between 10-20 PSI of regulator
setting.
Solution:
Check for system air leaks. Connect air supply and pressurize
air tank. Open Tire Pilot Plus air system valve on the regulator
box as illustrated in Figure 1. If the leak is audible, use soapy
water to pin point the leak. If the leak is not audible, disconnect
all tire hoses from the hubcaps as illustrated in Figure 2.
If after removing tire hoses light stays on, the leak is present
between the hubcap and the air tank. Check the axle vents,
hubcap fittings, air tank fittings, pressure protection valve, and
airline external to the axle for leaking air with soapy water. If
after removing the tire hoses the light shuts off, the leak is at
the tire or tire hose. Reconnect each tire hose until the light
comes back on to pin point the leak. Once the leaking wheel
is found, use soapy water to discover the source including
wheel hoses, valve stems, rim to tire, and tire tread. Repair or
Replace leaking component as necessary or move to the next
appropriate troubleshooting section below.
Figure 1
VALVE (FOR SYSTEM
PRESSURE CHECK)
AIR SYSTEM VALVE
(SHOWN OPEN)

SAF Tire Pilot Plus Specifications

General

Brand	SAF
Model	Tire Pilot Plus
Category	Industrial Equipment
Language	English

Summary

Troubleshooting System Air Leaks

Warning Light and Low System Pressure

System air pressure low between 10-20 PSI of regulator setting, triggering a warning light.

Axle and Hubcap Leak Diagnosis

Air Leak from Axle Vent

Air leak detected inside the axle or within the hubcap assembly.

Spindle Plug Fitting Leaks

Leaks originating from spindle plug fittings due to loose nuts or damaged tubing.

Air System Pressure and Flow Issues

Low Brake Air Tank Pressure

Brake air tank pressure is low due to valve issues or connection leaks.

Incorrect Tire/System Pressure Readings

System pressure readings are low/high due to regulator setting or leaks.

Specific Component and System Checks

No Air Flow Through Regulator

Issues with air system valve being closed or pressure protection valve backwards.

Hose Leaks at Valve Stem or Hubcap

Hose fittings are loose or have been over-tightened, causing leaks.

Water in Hubcap

Potential causes include loose oil plug, damaged gasket, or axle vent issues.

Tire Pressure Low or Flat

System has an air leak, possibly in the tire hose or the tire itself.

Warning Light Not Activating

Warning light fails to illuminate when system pressure is low.