Mec Speed Level 2684 RT Service And Parts Manual page 137

T
R O U B L E S H O O T I N G
H P
YDRAULIC
• Before attempting to check and/or adjust pressure relief valves, operate the machine for 15
minutes or long enough to sufficiently warm the hydraulic fluid.
• Insert a 0-5000 psi gauge onto the pressure test port on the valve manifold using gauge
adapter fitting MEC part no. 8434
Table 4a-5: Hydraulic Pressure Adjustment
Model Main
3084RT 2800 PSI
A
D J U S T I N G
• Remove the tamper proof cap.
• Turn adjustment screw "IN" to increase pressure.
• Turn adjustment screw "OUT" to decrease pressure.
• When correct pressure is obtained replace tamper proof cap with a new one.
Do not operate pump with tamper proof cap removed. Fluid will emit under
pressure.
MAIN HYDRAULIC
MANIFOLD
LEFT SIDE
RV1
Lift Relief
RV2
Steer Relief
"3084 Speed Level™ Sigma Lift" Service and Parts Manual
- 3 084 RT
M O D E L S
A
RESSURE DJUSTMENT
Lift
193 bar 2500 PSI
R V
E L I E F A L V E S
CONTROL MODULE
Gauge Port
(Test Port)
- - H P
Y D R A U L I C
- 3084RT
Steer
172.4 bar 2000 PSI
Figure 4a-10: Adjustable Valves Location - 3084RT
POWER MODULE
A
R E S S U R E D J U S T M E N T
Stand-by
137.9 bar 500-550PSI
Stand-By Pressure Relief
Main Relief
HYDRAULIC PUMP
November 2009
- 3 0 8 4 R T
35-38 bar
ART_3161
Page 4a-33