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SECTION 7
MAINTENANCE INFORMATION
7.4.3 CHANGING BRAKE FLUID
The inherent stability of Silicone DOT 5 Brake Fluid reduces
the need for frequent brake fluid replacement. Inspect the
fluid for degradation (discolouration or particles) during nor-
mal fluid level inspections. If discolouration has occurred,
the brake fluid system should be drained, flushed and re-
filled with fresh brake fluid. If particles are evident in the
fluid, drain the system, overhaul the master cylinder and the
brake caliper before flushing and refilling. An ARGO dealer
will preform these operations for you.
7.4.4 HYDRAULIC BRAKE PAD INSPECTION
Inspect the brake pads after every 25 hours of operation.
Worn, glazed or contaminated brake pads affect the efficiency
of the brake system. To inspect the pads, first remove the
firewall.
To remove the firewall:
1. Turn the firewall release catch (located at the bottom of
the firewall) counter-clockwise 1/4 turn.
2. Using the finger holes, pull the bottom of the firewall
back until the top of the firewall is clear of the vehicle
dash.
3. Lift the firewall clear of the driving compartment.
Brake Pad Inspection Procedure
With the firewall removed, both hydraulic brake calipers are
visible. Each caliper has 2 brake pads which are secured by
cotter pins (Figure 7-27). Inspect all 4 brake pads. Replace
the pads when:
•
the brake lining material molded to each metal backing
plate is worn to 0.10" thickness. (Figure 7-26)
•
the pads are glazed and brake performance is affected.
•
the pads are contaminated with lubricant, and brake per-
formance is affected.
To replace the brake pads:
Remove both cotter pins from each brake caliper. Remove
each brake caliper from the transmission using a 5/16" hex
driver to remove the two 103-41 SHCS mounting bolts ac-
cessible through the brake disc holes as shown in Figure 7-
25. Without disturbing the connection of the hydraulic hose
Figure 7-25. Hydraulic brake assemblies
Figure 7-26. Brake pad wear, hydraulic brakes
assembly, swing the caliper away from the brake disc to al-
low the removal of the brake pads as shown in Figure 7-27.
Install the brake pads into the caliper assembly. Remount
the caliper to the transmission, using #242 Loctite or equiva-
lent removable compound on the threads of the 103-41 SHCS
mounting bolts and tighten securely. Insert two new cotter
pins and bend the ends over to secure the pads in position.
Pump the steering levers a few times to build up proper pres-
sure and to locate the pads in the caliper assembly. Check
the steering lever travel and adjust if required.
