SLN.300 Maintenance
Instructions
734.207.1100 • 800.DADCO.USA • fax 734.207.2222 • www.dadco.net
3A. Inspect the Piston and Cushion
for damage or wear. If the Piston
or Cushion is damaged it must
be replaced. SLN.300 Lifters
manufactured after week 18
of 2007 (md1807) will have a
new Piston, Piston Rider and
Cushion. NOTE: The Piston, Piston
Rider and Cushion retrofit lifters
manufactured before week 18 of
2007 (md1807).
V. Cleaning & Inspection VI. Piston and Cushion Removal
2. Slide the Piston off the
Guide Rod. NOTE: If Piston
shows signs of damage it
must be replaced.
1. Remove the Retaining Ring
from the Piston using the Port
Servicing Tool’s small flat bit.
5A. Install the Cushion onto the
Guide Rod.
6. Install the new Retaining
Ring by pressing into place
with the Port Servicing Tool’s
small flat bit. The Retaining
Ring must be completely
seated in the square groove.
Return to DADCO’s SLN.300
Maintenance Bulletin
VIII. Seal Kit Replacement
and Reassembly, step 7.
VIII. Seal Kit Replacement and Reassembly
DADCO’s SLN.RK.300 repair kit can be used to repair all SLN.300 Non-Rotating Nitrogen Gas
Lifters. SLN.300 Lifters manufactured after week 18 of 2007 (md1807) will have a new Piston,
Piston Rider and Cushion construction. The Piston, Piston Rider and Cushion retrofit into SLN.300
lifters manufactured before week 18 of 2007 (md1807). Please follow the instructions below in
conjunction with the SLN.300 Maintenance Instructions (B04110) for proper inspection, removal and
installation of the Piston, Piston Rider and Cushion. After reviewing this maintenance guide, if you
require any additional training or have any questions please contact DADCO for assistance.
Use in conjunction with DADCO’s SLN.300 Maintenance
Instructions (B04110)
B07129A
Continued from DADCO’s SLN.300 Maintenance Instructions
4. Remove the Rider from the Piston
and inspect. Clean the Piston.
Snap the new Rider onto the Piston,
set aside for reassembly. Return to
DADCO’s SLN.300 Maintenance
Bulletin VII. Internal Rod Removal.
3. Slide the Cushion off
the Guide Rod. NOTE: If
Cushion shows signs of
damage it must be replaced.
5B. Install the Piston onto the
Guide Rod with Piston chamfer
facing toward the cartridge.
Chamfer
Continued from DADCO’s SLN.300 Maintenance Instructions
CAUTION: Always wear safety goggles when performing any maintenance work.
