TROUBLESHOOTING

Air Shift Malfunctions

Probable CauseRemedy

a.Low system air pressurea.Wait for pressure to build back up to normal.

b.Restricted or clogged air filter in range shift valveb.Replace air filter.

c.Restricted air line (bent, squeezed, twisted, etc.)c.Re-route and/or replace air lines.

d.Air lines too smalld.Replace with correct size air lines.

e.Defective O-rings in air shift cylindere.Replace O-rings.

f.Scored air shift cylinders or pistonsf.Repair or replace cylinders or pistons.

g.Defective range shift valve and/or air shift selector valve (on shift lever) g.Repair or replace as needed. h.Defective synchronizerh.Repair or replace as needed. i.Range synchronizer friction discs worn or burnedi.Replace synchronizer discs as needed. j.Intermixed synchronizer partsj.Install matched parts.