BOB OMS03A operating instructions Hand Brake

Adjusting the quick release mechanism				Fig. 7 Fender Screws
The wheel hub is clamped in place by the force of the quick release cam pushing against				Fabric Screw
one dropout and pulling the tension adjusting nut, by way of the skewer, against the
other dropout. The amount of clamping force is controlled by the tension adjusting nut.
Turning the tension adjusting nut clockwise while keeping the cam lever from rotating
increases clamping force; turning it counterclockwise while keeping the cam lever from
rotating reduces clamping force. Less than half a turn of the tension adjusting nut can						Fabric Screw
make the difference between safe clamping force and unsafe clamping force.
						Fender Screws
Front Wheel Secondary Retention Devices
All 2007 and newer BOB Strollers have front forks which utilize secondary wheel retention
devices designed to help keep the wheel from disengaging if the quick release is
incorrectly adjusted. Secondary retention devices are not a substitute for correct quick
release adjustment. The secondary retention devices on your stroller are the integral
type that is formed into the outer faces of the front fork dropouts.
WARNING: Do not remove or disable secondary retention devices. As its name				Fig. 8 Fender Installation		Metal Tab Hole
implies, they serve as a back-up for a critical adjustment. If the quick release is
not adjusted correctly, the secondary retention devices can reduce the risk of the				Brake	Cross Tube Hole
wheel disengaging from the fork. Removing or disabling the secondary retention				Mounting
devices may also void the warranty.				Plate Hole
Secondary retention devices are not a substitute for correct quick release
adjustment. Failure to properly adjust the quick release mechanism can cause
the wheel to wobble or disengage, which could cause you to lose control and fall,						Fender
resulting in serious injury or death.						Screw
Installing a Quick Release Front Wheel:
a. Move the quick release cam lever so that it curves away from the wheel (Fig. 9). This				Fabric
				Screw
is the FULLY OPEN position.				Hole
b. Insert the wheel between the fork blades so that the axle seats firmly at the top of					Fender Hole
the slots that are at the tips of the fork blades — the fork dropouts. The quick release
cam lever should be on the left side of the stroller (Fig. 11 & 12).
c. Holding the quick release cam lever in the OPEN position with your right hand as				Tension
shown in Fig. 11, tighten the tension adjusting nut with your left hand until it is finger						FULLY
tight against the fork dropout.				Adjusting		CLOSED
d. While pushing the wheel firmly to the top of the slots in the fork dropouts, and at the				Nut
same time centering the wheel rim in the fork, move the quick release cam lever
upwards and swing it into the FULLY CLOSED position (Fig. 9 & 12). The lever should
now be parallel to the fork blade and curved toward the wheel. To apply enough				(rotate to
clamping force, you should have to wrap your fingers around the fork blade for
leverage, and the quick release cam lever should leave a clear imprint in the palm				adjust
of your hand.				clamping
WARNING: Securely clamping the wheel takes considerable force. If you can fully				force)	Conical Springs
close the quick release without wrapping your fingers around the fork blade for
leverage, and the quick release cam lever does not leave a clear imprint in the					Quick Release	FULLY
palm of your hand, the tension is insufficient. Open the lever; turn the tension					Cam Lever	OPEN
adjusting nut clockwise a quarter turn; then try again.
e. If the quick release cam lever cannot be pushed all the way to the fully closed position				Fig. 9	Front Wheel Quick Release Anatomy.
parallel to the fork blade, return the lever to the OPEN position. Then turn the tension
adjusting nut counterclockwise one-quarter turn and try tightening the lever again.				Fig. 10 Caliper Brake Anatomy
Removing a Quick Release Front Wheel:						10 mm Nut
a. To remove the front wheel, open the brake quick release (Fig. 10).				Barrel	Brake Body
				Adjuster		Brake & Fender
b. Move the wheel’s quick-release lever from the locked or FULLY CLOSED position				Lock		Mounting Screw
to the FULLY OPEN position (Fig. 9). Your front fork has integral secondary
				Nut
retention devices. Loosen the tension adjusting nut enough to allow removing the
wheel.				Brake
c. Raise the front wheel a few inches off the ground and tap the top of the wheel with
the palm of your hand to knock the wheel out of the front fork.				Quick
				Release		Brake
7. HAND BRAKE:				Lever
						Pad Nut
The hand brake may be used to help slow or stop the stroller.
The hand brake is not a parking brake. (See section 8)
After installing the front wheel, the brake caliper will need to be placed in the closed
position. Close the brake quick release lever (Fig. 10) by squeezing the brake pads
against the wheel with one hand, then rotate the brake quick release lever in the counter
clockwise direction with your other hand until		it
points downward.		Fork
For the hand brake to work correctly, it is	Tension	Blade	Quick
critical that it be adjusted properly. Squeeze	Adjusting	Fork
the brake lever and verify that the brake	Nut		Release
pads contact the rim as shown in Fig. 15.		Dropouts	Cam Lever
If they are misaligned, use a 10mm wrench			Closed
to loosen brake pad nuts, slide pads into		Quick
correct position and tighten securely. The		Release
cable tension is pre-adjusted at the factory		Cam
yet the brake cable will need periodic		Lever				Fork
adjustment (as the cable stretches slightly		Open				Blade
and the black cable housing compresses	Fig. 11 Front fork dropouts shown
over time). To adjust cable tension, there					Fig. 12 Quick Release in the closed
are two barrel adjusters in the brake	with wheel in position. Adjust nut snug
assembly (Fig.10 & 13). To tighten the cable,	with Quick Release in open position.				position and parallel to fork blade.
loosen the lock ring and turn the barrel
OMS03A						P3