Page 34 of 36 Pages
Troubleshooting
Problem Cause Solution
Spongy Controls (Entire System) Air in System 1. Check reservoir and verify that there is fluid
and pressure is 80 psi.
2. Inspect for fluid leaks at all connections.
3. Check for air leaks in the reservoir (use soapy
water solution)
4. Bleed entire system.
5. Synchronize controls on one clutch or throttle
system.
Spongy Controls on one clutch or Air in that singular system. 1. Check reservoir, verify that there is fluid and
throttle system. pressure is 80 psi.
2. Inspect for fluid leaks at all connections of the s
ystem in question.
3. Bleed system in question.
4. Synchronize controls.
Sender arm wants to stop at its Controls out of synchronization. Synchronize controls.
mid-stroke.
FuII throttle on the sender will not 1. Throttle linkage length out of 1. Re-adjust length of the throttle linkage.
achieve maximum throttle RPM on adjustment. 2. Service Engine
Engine 2. Engine out of tune.
Full idIe on sender will not achieve idle 1. Throttle linkage length out of 1. Re-adjust length of the throttle linkage.
RPM on engine adjustment. 2. Service Engine
2. Engine governor out of adjustment
3. Engine out of tune.
Engine Throttle tends to creep toward Pilot check valve malfunctioning. 1. Remove pressure from system.
idle 2. Re-pressurize the system.
3. Re-purge the system of air.
Slave's internal piston seals or syn- 1. Remove pressure from system.
chronizing valves leaking due to 2. Rebuild or replace throttle slave.
wear or debris. 3. Re-pressurize the system.
4. Re-purge the system of air.
Full Throttle on sender gives idle on System tubing connected back- 1. Remove pressure from the system.
engine. ward. 2. Reverse tubing at the throttle slave.
3. Pressurize system.
4. Synchronize throttle control.
After a long running period the Throttle Slave is located at an engine hot Several Suggested Remedies:
tends to go out of synchronization. spot which has caused excessive 1. The use of heat resistant gasket material
heating of the throttle slave, which (approximately 1/8’ Thick) between the
in turn has caused the slave to de- mounting bracket and engine.
velop a vapor lock. 2. Spaces between the bracket and
engine, and slave and bracket.
3. Shielding around the throttle slave.
4. Re-mounting of the throttle slave in a
less hot area.
Contamination in pilot check valve 1. Remove pressure from system.
keeping it from functioning prop- 2. Re-pressurize the system.
erly. 3. Re-purge system of air.
If twin engines are equipped with 1. Re-adjust springs proper tension.
synchronizer, governor or NOTE: excessive tension in either throttle
synchronizer's tension springs are extremes will cause synchronization
out of adjustment. problems.
To Next Page
Loading...
Need help?
General