Poweramp RCR Series, Owner & User Manual

20

4111-0044 — June 2021

© 2021 Systems, LLC

8.  Fully close the down speed flow control valve 

by turning clockwise. Then, set the down speed flow 

control valve by incrementally opening the valve until 

the leveler takes 15-20 seconds to descend from 

stored to full below dock position. 

9.  Once ideal down speed flow control setting is 

achieved, lock the adjustment in place by tightening 

the set screw (

C

) on the adjustment knob. 

10.  Raise the maintenance props to the stored 

position and tighten all hardware with wrench.  

11.  Lower the leveler to a 45 degree angle. 

12.  Cycle lip by pressing the LOWER and LIP 

buttons together to lower the lip, then press the 

RAISE and LIP buttons together to raise the lip. Lip 

cylinder is now purged. 

13. 

Raise leveler to stored position and top off 

hydraulic fluid as required. 

1.  Using an external lifting device, support the RCR 

leveler in the stored position, with the maintenance 

props lowered in the maintenance position and all 

hardware tightened by wrench. 

2.  Lock-out and tag-out the leveler.

3.  New equipment only: Remove shipping bands 

from hoist cylinder(s).

4.  New equipment only: Fill powerpack fluid 

reservoir with hydraulic fluid. See page 28 for 

acceptable fluid specifications.

5.  Fully open the down speed flow control valve (

A

) 

by turning knob (

B

) counter-clockwise (see Figure 

19). Loosen set screw (

C

) to turn knob.  Flow control 

valve location varies depending on options; see 

Component Identification on pages 9-11 for location 

or contact Technical Services.

6.  With the cylinder pin(s) (

F

) removed from the 

embed/carriage, restore power to the dock leveler. 

Then cycle the hoist cylinder(s) up and down at least 

six times using the leveler’s own hydraulic power. 

Ensure the cylinder rod(s) smoothly extend/retract.

7.  Reconnect the hoist cylinder yoke(s) to the base 

of the embed or carriage by completing the following 

steps (see Figure 20):

a. Fully extend the hoist cylinder by pressing 

and holding the RAISE button until the rod stops 

extending and the powerpack goes into pressure 

relief.

b. Using the external lifting device, position the 

leveler platform so that it is leaning 4 degrees 

towards the inside of the building/dock.

c. With the platform leaning 4 degrees towards 

inside, loosen the jam nut (

D

) and adjust the 

yoke (

E

) so that the cylinder pin (

F

) easily slides 

through both the trunnion and yoke.

d. Install and lock rue clip (

G

) into place.

A— Flow Control Valve

B— Adjusting Knob

C— Set Screw

D— Jam Nut

E— Yoke

F— Hoist Cylinder Pin

G— Rue Clip

INSTALLATION

Purging Air From RCR Hydraulic System & Adjusting Yoke

If the equipment being serviced is a new start-

up, opened to atmosphere, or lifted manually, air 

will enter into the hydraulic system. Whenever 

this happens, air must be fully purged from the 

hydraulic system. 

Failure to do so will result in 

death or serious injury.

TOLERANCES

(UNLESS OTHERWISE NOTED)

FRACTIONAL:  



1/32"

DECIMAL:
     .00  = 



.01"

     .000 = 



.005"

ANGULAR:  



1



MATERIAL

DRAWN BY

CHECKED BY

DRAWING NO.

DATE

johnschlintz

1/27/2020

VS-VSH

PARTS

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2021

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STOCK NO.

REV A - ECN 18-066

C

B

A

Figure 19

Figure 20

F

D

E

G