Alamo MACHETE Product Service Manual page 98

MOTOR VALVE BLOCK - DIS-ASSEMBLY
VALVE BLOCK / INTEGRAL SHUTTLE REMOVAL:
1. Position the Motor on its mounting Flange as shown in Figure 48. If the Motor has a Integral
Shuttle and Low-Pressure Relief see Figure 49, Valve Block see Figure 48 loosen all of the Relief
Valve Plugs in the Valve Block. Keep track of how many Shims are removed with each Relief Plug.
Remove the four bolts that hold the Integral Shuttle valve or Valve Block to the Motor, Remove the
Integral shuttle Valve or Valve Block (See Figure 48 or 49)
2. Removes O-Rings and Back-Up Rings f/ the Motor that is under Valve Block on top of Motor.
3. On Motor with Valve Block (Figure 48) use 1-3/8" Wrench to remove Valve Block Low Pressure
and High Pressure Relief Valve Cartridge, The Low Pressure Relief will not have white Back-Up
Rings only O-Ring in lower groove. High Pressure Relief Valves will have two white Back-Up Rings
and one O-Ring in lower groove, This will help to ID Pressure Relief Valves. Low & High Pressure
Relief Settings are Pre-Set at factory, The Stampings of three digit codes on Cartridge identifies
setting. 1 St. Digit = 1000 Th., 2 Nd. digit = 100 Th. and 3 rd digit = 10 Th. (example Low Pressure
Codes # 061 code = 160 PSI (11 Bar), 022 = 220 PSI (15 Bar), or High Pressure Codes # 500 =
5000 PSI (344 Bar), 400 = 4000 PSI (275 Bar).
On Motor with Integral Shuttle Valve (Figure 49), Unscrew Low Pressure Relief Valve, Note the
Shims as you dis-assemble Low-Pressure Relief, Count Shims, as this is how many should be
re-installed during re-assembly.
Standard Motor
w/ Valve Block
Standard
End Cover
FIGURE 48
Motor w/ Integral
shuttle and Low
Pressure Relief
Valve (Built into
End Cover) Type
FIGURE 49
Machete (Service Manual) 04/04
© 2004 Alamo Group Inc.
Valve Block
High Pressure
Relief Valve
Back-Up
Ring
Low Pressure
Relief Valve
Shuttle
Valve
Gauge Port
Plugs
98
Gauge Port Plugs
High Pressure
Relief Valve
Low Pressure
Relief Valve
O-Ring
Square Cut Ring
Shims