16
308149
Service
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 12.
Required Tools
Torque wrench
Bench vise, with soft jaws
Rubber mallet
Hammer
O-ring pick
13 mm (1/2 in.) dia. brass rod
Set of socket wrenches
Set of adjustable wrenches
24 in. adjustable wrench
Thread lubricant
Thread sealant
Loctite
2760
or equivalent
NOTE:
Service Tool 109508 is available as an acces-
sory. The tool fits over the top of the displacement rod,
making it easier to apply a 24 inch adjustable wrench
or 3/4 in. drive socket when connecting or disconnect-
ing the rod from the piston assembly.
Disconnecting the Displacement Pump
WARNING
Keep hands and fingers away from the priming
piston during operation and whenever the pump is
charged with air/hydraulic fluid to reduce the risk of
injury! On the pump downstroke the priming piston
extends beyond the intake housing to pull the
material into the pump. The priming piston works
under extreme force. During operation and when-
ever the pump is charged with air/hydraulic fluid,
the priming piston can severely injury or amputate
a hand or finger, or break a tool, caught between it
and the intake housing. Always
relieve the pres-
sure
before checking, clearing, cleaning, flushing,
or servicing any part of the pump.
On King and Bulldog air-powered pumps, the air
motor piston (located behind the air motor shield)
moves when air is supplied to the motor. Never
operate the pump with the air motor shield re-
moved.
On Premier air-powered pumps, the rocker arms
(located beneath the rocker arm covers) move
when air is supplied to the motor. Never operate
the pump with the rocker arm covers removed.
Before servicing the pump,
relieve the pressure
to
prevent the pump from starting accidentally.
1.
Flush the pump, if possible. Stop the pump at the
bottom of its stroke.
Relieve the pressure
.
2.
Disconnect the air or hydraulic hose. Plug all
hydraulic hoses immediately, to prevent contami-
nation of the hydraulic system. Hold the fluid outlet
fitting (20) with a wrench to keep it from being
loosened while you disconnect the fluid hose.
3.
Disconnect the displacement pump (105) from the
motor (101) as follows. Be sure to note the relative
position of the pump’s fluid outlet to the air or
hydraulic inlet of the motor. If the motor does not
require servicing, leave it attached to its mounting.
CAUTION
Be sure to use at least two people when lifting,
moving, or disconnecting the pump. This pump is too
heavy for one person. If you are disconnecting the
displacement pump from a motor which is still
mounted (for example, on a ram), be sure to support
the displacement pump while it is being discon-
nected, to prevent it from falling and causing injury or
property damage. Do this by securely bracing the
pump, or by having at least two people hold it while
another disconnects it.
4.
Using an adjustable wrench, unscrew the coupling
nut (103). Remove the coupling collars (108). Take
care not to lose or drop them. See Fig. 6.
5.
Hold the tie rod flats with a wrench to keep the
rods from turning. Unscrew the nuts (106) from the
tie rods (107). Carefully remove the displacement
pump (105) from the motor (101).
6.
Refer to page 19 for displacement pump service.
To service the air or hydraulic motor, refer to the
separate motor manual, supplied.
Summary of Contents for Check-Mate 2100 A Series
Page 6: ...6 308149 Notes...
