Terex TS14G, Maintenance Manual

Page: 205 / 376

Section 220-0160
SM 1764 2-99
3
Steering System - Flow Reversing Valve
2. Place the battery master switch in the 'Off' position
and block all road wheels.
3. Remove double relief valve (2) from the machine.
Refer to Section 220-0130, DOUBLE RELIEF VALVE.
4. Before removal of flow reversing valve (5) from the
machine, clean exterior of the valve and hydraulic oil
lines to prevent ingress of dirt.
5. Disconnect the reversing linkage from the eye of the
plungers.
6. Identify and tag all hydraulic oil lines, to aid in
installation. With a suitable container available to catch
spillage, disconnect hydraulic lines from flow reversing
valve (5). Cap all lines and plug all ports of the flow
reversing valve (5) to prevent ingress of dirt.
7. Remove bolts and lockwashers (4) securing flow
reversing valve (5) to the steering trunnion. Remove
low reversing valve (5) and transfer to a clean area for
disassembly. Remove and discard 'O' rings (3).
DISASSEMBLY
Numbers in parentheses refer to Fig. 2.
1. If required, remove fittings from flow reversing valve
and identify to aid in assembly.
2. Remove plunger stop plugs (4 & 6) from valve body
(1). Remove and discard 'O' rings (5).
3. Match mark plungers (2) to their respective bores in
valve body (1). Pull both plungers (2) out from valve
body (1).
4. Pry seals (3) out of plunger stop plugs (4). Discard
seals (3).
5. If required, remove plugs (7 & 8) from valve body (1).
INSPECTION
Numbers in parentheses refer to Fig. 1.
Note:
There is a seal kit available to replace all of the
seals in the valve. Refer to the Parts Book for part
number of the seal kit.
1. Clean all parts with a suitable solvent and dry with
compressed air.
2. Inspect all threaded parts for stripped or damaged
threads.
3. Inspect valve body (1) bores and plungers (2) for
excessive wear, scratches or deep grooves. If either
valve body (1) or plungers (7) are damaged, they must
be replaced.
ASSEMBLY
Numbers in parentheses refer to Fig. 2.
1. If removed, install plugs (7 & 8) in valve body (1).
2. Install new seal (3) in plunger stop plug (4) with lip
facing in. When assembled, the seal should be
recessed approximately 3.0 mm ( 0.12 inch) from the
face of the plunger stop plug (4).
3. Install new 'O' rings (5) on plunger stop plugs (6).
Install plunger stop plugs (6) in valve body (1).
SM - 2138
Fig. 3 - Flow Reversing Valve Installation
1 - Bolts & Lockwashers
2 - Double Relief Valve
3 - 'O' Ring 4 - Bolts & Lockwashers
5 - Flow Reversing Valve
Courtesy of Machine.Market