Brake System Argo Service Manual
BR-11
Ontario Drive & Gear Limited www.argoutv.com
PH.(519)- 662-2840 FAX (519)- 662-2421
2. Locate the bleed screw on the hydraulic
service brake caliper. Attach a transpar-
ent hose to the bleed screw and run to
a container to collect the used uid for
disposal later. Slowly loosen the brake
caliper bleed screw and gently squeeze
the hand brake lever to purge the brake
uid from the system.
3. Continue to pump the uid from the system while monitoring the master cylinder. Re-
peatedly replenish the master cylinder while pumping the old uid from the system.
4. When the old uid at the bleed screw appears to be replaced by fresh uid, perform the
servicing procedure, Bleeding The Brakes (Service Brakes)
5. Add brake uid to the master cylinder level indicated on the reservoir.
6. Replace master cylinder lid and torque cover screws 6-8 in-lb (.67-.90 Nm).
Bleeding The Hydraulic Brake System (Service Brakes)
1. Remove master cylinder cover and add DOT 4 (ONLY) brake uid as necessary.
2. With the bleed screw still tight, purge
any air from the system by gently
pumping the brake lever. When there
are no longer visible signs of air bub-
bles observed in the master cylinder
and some resistance is felt in the hand-
brake, replenish it with more uid to
bring it back up to the top of the full
level line.
3. Next, apply steady pressure to the
brake lever until the brake is fully en-
gaged.
4. Hold the brake lever in this position and slowly loosen the caliper bleed screw 1/4
turn. Open the bleed screw only enough to slowly release uid out of the screw. If
there is any air still present in the system, it will be noticeable through this screw with
a slight “spitting” of uid. Re-tighten the screw and once again pump the brake sys-
tem slowly a few more times. Apply pressure to the brake lever again and hold. Open
the bleed screw gradually until uid slowly releases. Repeat this procedure until the
uid coming from the bleed screw is a full stream with no visible signs of air in the
system.
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