MOUNTING

Several self adhesive labels are supplied with each 691 Brake Lock. Determine which labels are used in your application and affix in the vehicle cab in view of the operator. See page 1.

Actuator

1.Repeat the mounting procedures for each actuator used in your system.

2.Find a location, preferably on the frame rail away from heat, where the actuator(s) will mount allowing easy access to brake lines, refer to Figure 12. The actua- tor(s) must be mounted horizontally below the level of the vehicle master cylinder. The bleeder screws must be in an upright position. Relocate the bleeder screws as necessary to maintain upright position. Torque bleeder screws 17.6-20.3 N-m (13-15 lb-ft).

FIGURE 12

RECOMMENDED ACTUATOR

MOUNTING LOCATION -

INSIDE OR OUTSIDE FRAME RAIL

3.Using the actuator mounting brackets as a template, mark and drill four 11/32" diameter holes. Fabricated mounting brackets can be used to mount the actua- tor(s). The strength of fabricated brackets must be adequate to prevent flexing of brake lines.

4.Install the actuator using four 5/16-18UNC, grade 5, bolts, lock washers, and nuts. Torque 27.1-33.9 N-m (20-25 lb-ft).

5.Install the brass adapters from the fitting package in the actuator ports and torque 7.9-10.2 N-m (70-90 lb-in).

Power Unit

1.The power unit can be mounted horizontally in the engine compartment, on the frame rail, or in the cab. However, it must be protected from dirt, moisture and possible impact. Easy access to the reservoir breather/filler plug must be maintained to allow for filling and checking fluid level. The reservoir breather plug must be kept in an upright position. If this is not possible a remote reservoir can be installed, refer to 691 accessories on page 19.

2.Mark and drill two 7/16" diameter holes 2 5/16" apart. Fabricated mounting brackets can be used.

3.Mount the power unit using two 3/8-16UNC bolts and lock washers.

4.691 models designated (HO) must use mineral base hydraulic oil in the power unit reservoir. 691 models designated (SF) must use DOT 5 silicone fluid in the

FIGURE 13

Pressure

Switches

CAUTION Label

power unit reservoir. Check the CAUTION label around the power unit reservoir breather/filler plug to verify fluid type, refer to Figure 13.

Control Module

1.A mounting bracket is provided with the 691 Control Module to mount the control module directly to the

691 Power Unit. See power unit dimensional drawing on page 5. The control module can be mounted on top of the power unit as shown, as well as mounted to either side. The control module can also be mounted to position the harness connection in the opposite direction shown.

2.When the 691 Control Module is not mounted to the 691 Power Unit, an optional 11' wire harness

(32-820-022) is available from MICO, Inc. See page 19 for 691 Accessories.

FIGURE 14

User Interface

1.A dash mounted user interface is provided for use by the operator in the cab. The user interface includes a manually activated switch, audible alarm, and "locked" lamp. Find a mounting location in the cab of the vehicle where:

A.The operator has easy access to the "lock" - "release" rocker switch.

B.The "lock" lamp is visible to the operator.

C.It is protected from having something spilled on it.

D.There is easy routing of wires from the 691 Control Module to the user interface.

2.The user interface is not necessary for applications where the 691 System is activated by other manual switches or electrical interlocks.

NOTE

When the 691 User Interface is not installed with this system, another visual identifier must be used to inform the operator that the 691 System is "locked". See schematic on page 14.

FIGURE 15

6