Installation manual

© SRAM LLC • 2010 TRUVATIV TECHNICAL MANUAL 34
Issue Possible Cause Cure
Erratic Shifting Too little tension in shift cable Adjust the shifter by turning barrel adjuster on the shifter counter-
clockwise. If barrel adjuster will not provide sufficient adjustment,
reattach cable at the cable anchor bolt per “Shifter Installation
Instructions”.
Too much tension in shift cable Adjust the shifter by turning barrel adjuster on the shifter clockwise. If
barrel adjuster will not provide sufficient adjustment, reattach cable at
the cable anchor bolt per “Shifter Installation Instructions”.
Malfunctioning or damaged
shifter
Cycle the shift lever several times to confirm proper function. Replace
shifter, if necessary.
Contaminated or improperly
routed shift cable housing
Check that housings are properly routed and that cables move freely
within the housing. Properly routed cables will take a smooth path
to the cable stop and provide enough slack for handlebar and any
suspension linkage movement. Clean and lubricate or replace housings
if necessary.
Cable end pinched between collar
plate and frame or ISCG spacers
Check to confirm that the excess cable beyond the cable anchor bolt is
trimmed to the correct length and allowed to move freely. If not remove
cable from pinch point.
ISCG tabs are not perpendicular to
the BB axis
Use SRAM ISCG cutting tool and face ISCG tabs perpendicular to BB
axis.
ISCG tabs do not meet
HammerSchmidt dimensional
guidelines
Confirm frame compatibility with the HammerSchmidt ISCG tab gages.
Frames with ISCG tabs that do not meet the gage criteria are not
recommended for use with HammerSchmidt.
Loose collar plate Tighten collar plate bolts to proper torque value.
Broken overdrive spring Replace overdrive spring.
Contamination on OverDrive
pawls
Clean and lubricate overdrive pawls.
Contamination inside actuator
assembly
Clean and lubricate actuator assembly internals.
Contamination in mechanism
assembly
Disassemble, inspect, clean, and lubricate mechanism assembly.
Wear or damage in mechanism
assembly
Disassemble mechanism assembly and examine gear teeth and pawls
for wear or damage.
Unusual Noises
(Creaking,
Ticking,
Grumbling,
Buzzing,
Chain rub)
Loose collar plate Tighten collar plate bolts to proper torque value.
Loose crank bolts Tighten crank bolts to proper torque value.
Loose bash guard nuts Tighten bash guard nuts to proper torque value.
Loose planet nuts Remove bash guard nuts and bash guard. Tighten planet nuts to proper
torque value. Replace bash guard and tighten bash guard nuts to proper
torque value.
Worn or loose chainring Inspect chainring and chainring retainer. Replace if necessary.
Worn damper or ring spacer Disassemble mechanism assembly, inspect and replace as appropriate.
Contamination in mechanism
assembly
Disassemble, inspect, clean, and lubricate mechanism assembly.
Incorrect chain guide position Adjust chain guide as necessary.
Wear or damage in mechanism
assembly
Disassemble mechanism assembly and examine gear teeth and pawls
for wear or damage.
TROUBLESHOOTING