INSERT VALVE: 8-SPEED "LL" MODELS (EQUIPPED WITH ROADRANGER VALVE A-5015) AND 13-SPEED SPLITTER MODELS
The insert valve is a self-contained 1-3/16" valve as- sembly located in the reduction or splitter cylinder cover. It CANNOT be disassembled except for the three O-rings on outer diameter. The O-rings provide a stationary seal and do not move in cylinder.
When installing the insert valve in bottom edge of cover, apply Fuller #71206 silicone lubricant or its equivalent to O-rings and cylinder walls. Install valve in bore with flat surface to the inside. When install- ing the special valve retaining nut, apply Fuller #71204 adhesive/sealant or its equivalent to threads and tighten. See TORQUE RECOMMENDATIONS.
CENTER PORT, SIGNAL LINE FROM CONTROL VALVE “SP” PORT.
BOTTOM EXHAUST PORT
Travel of the small insert valve piston is only 3/16" As shown in the illustrations below, when NO AIR is applied to the top side of valve piston, CONSTANT AIR supplied from the regulator passes freely through the insert valve and to the backside of cylin- der piston, moving the yoke bar forward to disengage deep reduction or splitter gearing (LOW RANGE AND HIGH RANGE OR DIRECT). When AIR is applied to the top side of valve piston through signal line, the piston moves down to cut off air supplied to the backside of cylinder piston. This air is exhausted out bottom port of cover when CONSTANT AIR supplied from the regulator is directed to the frontside of cyl- inder piston, moving the yoke bar rearward to engage deep reduction or splitter gearing (LO-LO AND UNDERDRIVE/OVERDRIVE).
LOW RANGE AND HIGH RANGE OR DIRECT
LO-LO OR UNDERDRIVE/OVERDRIVE