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Tiger Explorer XR Series
Balancer
The balancer is fitted to control 'pulsing' within the engine. Without any form of balancer, the engine would
'pulse' each time the crankshaft rotated. This 'pulsing' would be felt as a vibration which would amplify as the
engine speed was increased.
The balancer has the effect of a pair of counterbalance weights which create an equal amount of energy in the
opposite direction, and at the same time as that produced by the crankshaft, pistons and connecting rods.
Because the opposing pulses occur at the same point of crankshaft rotation, and are of an equal magnitude, a
state of equilibrium or balance is reached.
Balancer - Removal
Separate the crankcase halves (see Crankcases - Disassembly).
1.
With the crankcase halves separated, lift out the balancer shaft complete with the shaft bearings/circlips.
2.
To remove the left hand bearing, slide the bearing, circlip and bearing sleeve from the balancer shaft.
3.
To remove the right hand bearing, remove the circlip and slide the bearing race and thrust washer from the
shaft.
Balancer - Inspection
1.
Inspect all gears for chipped or missing teeth.
2.
Inspect all bearings for signs of overheating (blue discolouration), seized or damaged rollers, and any other
damage.
3.
Inspect the gear teeth for overheating (blue discolouration).
Note
Signs of blue discolouration on the gear centre are due to the manufacturing process and must be
disregarded.
Balancer - Installation
1.
Lubricate and fit the right hand bearing and circlip to the shaft.
2.
Lubricate and fit the left hand bearing and circlip.
3.
Locate the balancer to the crankcase aligning the balancer gears and crankshaft as shown in the illustration
below, while ensuring that the bearing circlips and pins locate correctly in their corresponding grooves in the
crankcase.
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BALANCER
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