Brakes; Suspensions And Steering; Troubleshooting - PIAGGIO Ape Workshop Manual

APE TM Benzina
Possible Cause
Loosening of the crankcase halves and the differential cover
locking nuts
Axle shaft oil seal hood worn or broken
Cracked crankcase
Loose oil drain plug

Brakes

Possible Cause
Return springs stretched
Compensation hole on the pump clogged
Rubber gaskets swollen or sized
Possible Cause
Air in the system
The flexible pipe inflates under pressure due to wear
Air leak in the pump due to poor tightness of rubber rings
Possible Cause
Deteriorated valve ring
The oil used is not suitable
The bleed hole on the pump cap causes loss of pressure in the
pump and allows air to enter the sealing gasket
Fluid leak from fittings, cylinders and hoses
Possible Cause
Insufficient clearance between shoes and drums
Shoe return spring weak or damaged
Piston locked
Drums and shoes worn or scored

Suspensions and steering

Possible Cause
Hub bearings worn or with excessive clearance
The wheel hub chamber needs to be greased
Hydraulic absorber inefficient or discharged
Roller bearings of swinging arm worn
Possible Cause
Inefficient or leaking shock absorbers
Worn rubber buffers
Excessive tyre wear due to incorrect inflation pressure or ex-
cessive loads
BRAKES BLOCKED
ELASTIC ACTION OF THE BRAKE PEDAL
BRAKE PEDAL VERY YIELDING
B
RAKES OVERHEATING
FRONT WHEEL NOISE
FAILURE ON ONE WHEEL
Operation
Check the locks, replace the gaskets if necessary.
Replace.
Replace.
Lock and replace if damaged.
Operation
Replace.
Clean and bleed the air out of the system.
Inspect the system, replace all rubber parts and the liquid (see
Rules to check the hydraulic brake) purge air from the sys-
tem: use the oil specified in General maintenance and lubri-
cation regulations and in Priming the oil pump.
Operation
Purge.
Replace.
Replace the rings.
Operation
Replace the valve.
Replace the oil with that prescribed.
Clean the tank cap and bleed the system.
Review and replace the worn components.
Operation
Self-adjusting device locked.
Replace.
Inspect the unit.
Replace.
Operation
Replace.
Disassemble or apply grease.
Replace.
Replace.
Operation
Replace.
Replace.
Check and restore the tyre to the prescribed pressure or re-
place it (if necessary) and recall the user's attention.
N.B.: In case of replacement of wheels or tyres, at replace-
ment, lock the nuts while respecting the table of tightening
torques.

Troubleshooting

TROUBL - 45