GAUGE AS 5356294 - Caterpillar

Spacer (3) to pin (4) clearance, in combination with the compression springs (5) maintains the correct barrel (2) to port plate (1) maximum separation. This maximum separation limits leakage during start up and downhill operation.The adjustment procedure determines the correct size of spacer to get distance (B) between the center pin (center of pivot head) and centering pin (12). With correct distance (B), clearance (C) between spacer (2) and center pin (4) is 0.25 to 0.40 mm (.010 to .016 inch).
Illustration 15 g00404938
Dial Indicator Setup (13) Gauge blocks (19) SupportPlace support (19) on a surface plate. Using gauge blocks (13), build up dimension (B) as listed in the above chart. Set up the dial indicator and zero.
Illustration 16 g00404978
Spacer Installation (1) Port plate (2) Cylinder barrel (3) Spacer (20) Wire (21) CylinderRemove the flushing valve from plate (1). Using a piece of wire (20), guide spacer (3) (minimum thickness) into center pin cylinder (21) of barrel (2). Place center pin in cylinder (21) without compression springs (5).
To avoid damage to center pin (4) and support (19) in the next step, place measuring kit cylinder (24) over the support and lay the cylinder on its side (horizontal).
Illustration 17 g00405118
Measurement for Spacer Thickness (1) Port plate (2) Cylinder barrel (3) Spacer (4) Center pin (12) Centering pin (19) Support (22) Centering disc (23) Lifting screws (24) Measuring kit cylinder (25) Centering holeInsert barrel (2), spacer (3), and center pin (4) into the centering hole (25) in support (19). Stand the cylinder in a vertical position. Insert centering pin (12) in port plate (1) and barrel (2). Position centering disc (22) with two lifting screws (23) over the port plate. Slide this assembly under the dial indicator.The dial indicator must read between -0.25 mm (-.010 inch) and -0.040 mm (-.016 inch). The motor has four different sizes of spacers in order to get the correct center pin to port plate distance. There is a minimum spacer size. Each succeeding size of spacer is 0.10 mm (.004 inch) thicker. Depending on the dial indicator reading, select the correct spacer.
Table 24
Motor    Spacer    Thickness (mm)    Difference From Min. Spacer (mm)    Reference Dimension (C)    
6E-3905     119-6117     9.6     0 (min spacer)     3.44 mm    
119-6118 9.7     .1     3.53 mm    
119-6119 9.8     .2     3.63 mm    
119-6120 9.9     .3     3.72 mm    For example, measurement for dimension (B) is -0.50 mm (-.020 inch) on the dial indicator. In this case, remove the spacer with the minimum thickness and replace with a spacer that increases the indicator reading by 0.10 mm (.004 inch) to give a dimension (B) of -0.40 mm (-.016 inch).Once the correct spacer has been selected, center pin (4) can be removed. Six compression springs (5) can then be inserted using a piece of wire (20) as a guide. The orientation of the six compression springs is important. See view (A) at the beginning of this procedure for proper spring orientation.
Illustration