Nexen DBSE 835030 - Manual (Page 11)

11 FORM NO. L-20017-C-1212
Refer to Figure 7.
1. Remove the two Hex Head Cap Screws (Item 8), Hex
Head Nuts (Item 10), Lockwashers (Item 9) and Flat
Washers (Item 14). Then remove the two Cylinder
Assemblies (Item 2) from the “T” Support (Item 12).
(See Figure 6).
2. Separate the two Cylinder Assemblies (Item 2) and
set the Spacers (Item 13) and Pin (Item 4) aside. (See
Figure 6).
3. Remove the Flat Head Cap Screws (Item 6) securing
the Shoe Facings (Item 1) to the Piston (Item 3).
PARTS REPLACEMENT - SEAL REPLACEMENT
4. Remove the Flat Head Cap Screws (Item 17), End Cap
(Item 16) and Springs (Item 11) from both Cylinders
(item 2).
5. Push Pistons (Item 3) out of both Cylinders (Item 2).
6. Remove old U-Cup Seals (Item 5) and O-Rings (Item
15) from both Pistons (item 3).
7. Clean the O-Ring grooves of the Pistons (Item 3); then,
lubricate the new U-Cup Seals and O-Rings and contact
surfaces with a thin film of fresh o-ring lubricant.
8. Install the new U-Cup Seals (Item 5) and O-Rings (Item
15) onto both Pistons (Item 3).
9. Place Springs (Item 11) into spring pockets of Pistons
(Item 3).
10. Attach End Caps (Item 16) to Cylinders (Item 2) with
Flat Head Cap Screws (Item 17).
Note
Orientation of mounting holes in End Cap must
match mounting holes in Cylinder. Alternately and
evenly tighten Flat Head Cap Screws to 178–232
in-lbs (20.1–26.2 Nm).
11. Apply Loctite 242 to the threads of the Flat Head Cap
Screws (Item 6); then secure the Friction Facings (Item
1) to the Pistons (Item 3). Tighten Flat Head Cap Screws
(Item 6) to 62–81 in-lbs (7.0–9.2 Nm).
12. Using the two Hex Head Cap Screws (Item 8), Hex Nuts
(Item 10), Lock Washers (Item 9) and Flat Washers
(Item 14), secure the two Cylinder assemblies (Item
2) with the Spacers (Item 13) and Pin (Item 4) to the
“T” support (Item 12).
2
1
6
15
5
3
11
17
16
FIGURE 7
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.
CAUTION
Orientation of U-Cup Seal is important.
Open side of U-Cup Seal should face into
the Cylinder (Item 2).