Pacific Cycles FROG - Manual (Page 13)

riese und müller GmbH Frog Manual
Danger
: Incorrect assembly can lead to poor functioning or failure of the brakes. Proceed in strict accordance with the
manufacturer’s instructions. You absolutely must test your brakes! Errors in mounting wheels can lead to loss of control, and could
lead to serious accidents.
Tip
: When you are on the road with your Frog always take a spare tube and the necessary tool with you. So you easily can fix a
puncture.
PAGE 32, Steering bearings or headset
The fork, stem, handlebar and front wheel are fixed to the frame by the steering bearings, also known as the headset. So that the
bike can self-stabilise and have good straight-line handling, this bearing must be able to turn easily. Road shocks and bumps
impose heavy loads on this bearing, and it can come loose and go out of adjustment.
Danger
: If you ride with a loose headset, extremely high loads are imposed on fork and bearings. Damage to the bearings or even
a fork breakage could be the result, with possibly serious consequences.
Checking
· Check for play by putting your fingers around the upper bearing shell.
· Hold the front brake with your other hand, and push the bike firmly forwards and backwards.
· If the bearing has play, you will feel noticeable movement between upper and lower parts.
· To check that the bearing is turning easily, lift the frame up with one hand, so that the front wheel loses contact with the
ground. Move the handlebar from left to right. The front wheel should move easily from far left to far right, without
‘indexing’. If the handlebar is lightly touched, the wheel should move as if of its own accord from the straight-ahead
position.
Caution
: Adjusting the headset bearings requires a degree of experience, so this work should be left to your dealer.
Adjustment
The headset bearings consist of an inverted Aheadset arrangement. The ‘steerer tube’ goes from the stem hinge downwards. At its
lower end the fork pushes onto it, and is fixed by two clamp screws A (similar to the way an Aheadset stem is fixed). In addition,
the fork is held in place from below with a fixing cap secured by bolt B.
· To adjust the headset, the two clamping screws A must first be loosened.
PAGE 33, Suspension pivot bearings
· The play can now be adjusted out using the recessed bolt B. Tighten this up gently ‘by feel’.
Caution
: Do not completely tighten up this bolt, or you will be ‘dialling in’ play.
· Align the stem again so that the handlebars are straight.
· Re-tighten the side clamp bolts A. Apply a torque of 5Nm.
· Carry out the test for play as described above. Also, make sure that the bearing isn’t adjusted too tight.
Danger
: Check that the stem is completely secure against turning after you’ve adjusted the headset bearings! A loose stem could
lead to a crash!
Front suspension bearings
The front wheel swing-arm on the Frog is supported by maintenance-free IGUS ‘Iglidur’ bearings. The pivot bolts can be adjusted
from the outside with an 8mm hex key. The inner part of the bolt is secured to the fork against rotation and cannot be moved. If
the front suspension develops play and starts to wobble or oscillate as you ride, the outer pivot bolt can be tightened somewhat.
If the front suspension is hard to fold, the outer pivot bolt can be slightly loosened. If the bearing is completely disassembled,
please secure the thread of the pivot bolt with thread-lock adhesive.
Rear suspension bearings
The Birdy’s rear swing-arm is supported on a very precise and maintenance-free INA sealed cartridge needle bearing, which
requires neither adjustment nor maintenance. However, the position of the pivot axle and its corresponding clamp bolts should be
checked regularly. Should the axle have moved over to left or right, so that it is no longer completely locked into the swing-arm
on both sides, please consult your dealer. The clamp bolts must be tightened to 3.5 Nm torque.