wsm STW37 Workshop Manual page 382

STW34, STW37, STW40, WSM
 Lifting
1. When the position control lever is moved to the LIFT
position, the control arm (2) rotates to the arrow.
Therefore, the spool drive lever (1) moves around
the fulcrum P and pull the spool (3) opening the LIFT
circuit.
2. When the lift arm moves upward, the feedback arm
(4) is rotated to the arrow, since the feedback rod (5)
is actuated. Therefore, the spool drive lever (1)
moves around the fulcrum Q and pushes the spool
(3).
3. The lift arm stops when the spool returns to the
neutral position.
(1) Spool Drive Lever
(2) Control Arm
(3) Spool
(4) Feedback Arm
(5) Feedback Rod
8-M12
HYDRAULIC SYSTEM
[1] Lifting
[2] Lifting to Neutral
P: Fulcrum
Q: Fulcrum
9Y1211109HYM0012US0
KiSC issued 11, 2014 A