Troubleshooting - Horton DRIVEMASTER Instrucciones De Instalación

3. Bolt the Fan Drive to the engine. Use flat washers on each manufacturer's approved bolt or studs - DO
NOT use lock washers. Tighten the mounting bolts to the vehicle manufacturer's specifications.
Correct belt adjustment and alignment is necessary for all belt driven components to assure longevity
of component life. Over tightening of belts will shorten bearing life. Loose belts will cause excessive
belt wear and shorten bearing life. Consult the equipment manufacturer and/or engine manufacturer
4. Replace and tighten the belts to manufacturer's specification.
If a larger fan diameter is required, contact Horton at 1-800-621-1320.
5. Check the fan for cracks or missing weights; then, remount the fan on the Fan Drive. Tighten the bolts
and/or nuts to the vehicle manufacturer's specifications.
6. Start the engine and let the air pressure build to at least 90 psi [6.21 bar].
Turn off the engine.
7. Manually engage and disengage the Fan Drive by opening and closing the electrical circuit going to the
solenoid valve. For a normally-open electrical system, use a jumper across a sensor. For a normally-closed
electrical system, open the circuit by disconnecting a sensor wire. With the Fan Drive engaged, recheck
the entire system for air leaks, or activate the manual override switch (if equipped).

TROUBLESHOOTING

PROBLEM
I. Air leaking from Fan Drive
bleed hole
II. Premature Friction
Lining failure
1. Obstructed fan.
2. Low air pressure to Fan
Drive.
22748-J-0407
specifications for proper belt adjustment.
The maximum fan diameter is 32''.
PROBABLE CAUSE
1. Bad seals or air cartridge.
Bleed Hole
Journal Bracket
1. Loose shroud, bent fan,
torn engine mounts, etc.
2 a. Restricted air line.
b. Restricted Solenoid
Valve.
c. Low system air
pressure.
d. System air leak.
16
SOLUTION
1. Install Repair Kit.
1. Find and remove
obstruction, repair or
replace damaged parts.
Install Repair Kit.
2. a. Replace air line.
Install Repair Kit.
b. Replace Solenoid
Valve. Install Repair
Kit.
c. Repair system.
Install Repair Kit.
d. Repair leak.
Install Repair Kit.