KR8 Issue 10 © 2013
3
KR GUN PARTS LIST
TROUBLE SHOOTING GUIDE
TROUBLE
CAUSE
REMEDY
A) Coupler Leaks
A) Dirt under the seat of the outlet
Ball (23) Note: There is nothing
wrong with the coupler itself.
A) Change to high volume and strike the handle sharply. If it still leaks, remove the
extension tube (28), spring keeper screw (21), spring (22) and ball (23).
Clean the seat and replace the ball, spring and spring keeper screw (part way). Prime
the pump, and screw in the spring keeper screw until the grease stops leaking. Then
screw in an extra 2 full turns. Reassemble extention tube (28)
Note: Too many turns makes the gun hard to operate, and too few turns allows the
gun to leak. If the coupler still leaks replace the complete outlet body assembly.
When refitting the outlet body (24) hold the handle (29) in the closed position. This
enables the back-up washers and o’ring seals to enter squarely onto the piston.
B) The valve stem (3) has worked
loose and is holding the outlet ball
(23) off its seat
B) Remove the handle pin (30), and handle (29). Remove piston (8), re-tighten valve
stem (3) or replace the complete piston assembly
B) Gun leaks at the
back end of the
piston.
Glyd ring worn
Remove the handle pin (30) and handle (29). Remove the old piston and replace with
a new piston assembly.
A) Dirt under the delivery ball (5) or
damaged ball seat in the piston (8)
A) Change over to the high volume setting and strike the handle hard to shift dirt off
the seat. If there is no improvement, replace the piston assembly.
B) Seals (25, 26) are worn
B) Replace seals (25, 26) in the outlet body.
C) Valve stem (3) has become
Loose from the piston (8)
C) Replace piston assembly
C) Gun fails to
deliver grease on
the high
pressure setting
Order for replacem ent
Item
No. off
New part/set
KIT. REF
DESCRIPTION
KR-1K (Kit A)
(A)
OVERHAUL KIT
KR-2K (Kit B)
(B)
PISTON KIT
1
1
N/A - new gun required
Gun Body
2
1
A & B
Piston spring
3
1
A & B
Valve Stem (Piston)
4
1
A & B
Spring, Piston Check
5
1
A & B
7/32" Ball. Piston
6
1
A & B
Glyde Ring
7
1
A & B
Glyd Ring O'ring (BS111)
8
1
A & B
Piston
9
1
A
Valve Seat
10
1
Operating Plunger Control
11
2
Cap Socket 1/2"X3/16" w hit
12
1
KR12s
A
Spring, (inlet check)
13
1
A
5/16" Ball Inlet
14
2
A
O' ring, Seal Body (BS013)
15
1
A
O' ring. Plunger Control (BS008)
16
1
Control Body Assy
17
1
A
Washer, Hose Adaptor
18
1
A
O' ring, Hose Adaptor (BS113)
19
1
Ball End, Hose Adaptor
20
1
Ball. Socket Retainer
21
1
A
Keeper Screw (outlet)
22
1
A
Spring (Outlet)
23
1
A
1/4" Ball (outlet)
24
1
Outlet Body
25
2
A
Teflon Back Up Washer
26
1
A
O'ring. Piston (BS012)
27
1
KY
Coupler
28
1
KH23s
Extension Tube
29
1
N/A - new gun required
Handle
30
1
A & B
Handle pin
31
2
A & B
Drive Screw
32
1
A
Retainer O'ring (BS017)
