CORE ASSEM. 8N0129 - Caterpillar

Manual Adjustment of Bulldozer Blade Pitch
Illustration 1 g01258184
Illustration 2 g01258266The bulldozer blade can be placed in several pitch positions such as the following pitches: the extended position (A), the middle position (B) and the retracted position (C).
Lower the bulldozer blade to the ground. Place the control for the lift cylinder in the FLOAT position.
Actuate the tilt cylinder in order to remove all force from the tilt brace. Boss (5) must be loose and able to move freely. Stop the engine.
Remove pin (2) and cover (1), if necessary.
Keep fingers clear. Do not place your fingers into the pin holes in the tilt brace and/or push arm bracket at any time during the adjustment procedure.
Install the slotted end of cover (1) onto boss (5).
Turn the top link until the desired cutting angle is set.
Install the cover (1) and replace locking pin (2). Note: If the cover plate does not cover both mounting bolt (3) and retainer bolt (8), then the top link is incorrectly adjusted.Power Adjustment of Bulldozer Blade Pitch (If Equipped)
The bulldozer blade can be moved into the following pitch positions with implement control lever (9), if equipped: the extended position (D) and the retracted position (E).
Illustration 3 g03839586
Some components removed for clarity
Power pitch assembly: retainer bolt (8) shown
Illustration 4 g02470778
Press button (D) to pitch the blade forward to the extended position.
Press button (E) to pitch the blade rearward to the retracted position. Note: The functions of the Power Pitch buttons with change operation if an Automatic Blade Control System is installed and turned ON. The buttons will become increment and decrement control buttons