Danfoss Airflex DBBS, Installation, Operation And Maintenance Manual

Page: 14 / 27

Airflex ® DBB 8110 Brake Assembly E-CLCL-TT001-E December 2012 14
CAUTION
The locknuts (18) must be loosened gradually to
prevent damage to the brake components.
4.2.2.3 Remove the locknuts (18) and washers (1 7) and slide
the cylinder (19), spring housing (16) and pressure
plate (14) off of the studs (6) as an assembly. Set
aside in a clean area making sure not to damage the
friction disc (8) or friction block on size 50 brake, on
the pressure plate. See TABLE 9 for weight of sub
assembly.
Note
If a stud (6) should happen to come loose, remove it
completely and clean the threads on the stud and the
threads in the mounting flange. Apply Loctite
®
Loc-
Quic ® Primer Grade “T” to the stud threads. After
the threads have dried, assemble to the mounting
flange using Loctite #262. The end of the stud
must not extend past the mounting surface on the
mounting flange.
TABLE 8
Wear Gap Values, - Inches (mm)
(X-Gap) Gap (Y-Gap)
*X-Gap Required for Y-Gap gap required for
Disc Size Qty. of New Gap Adjustment New Gap Adjustment
Inches Discs inch (mm) inch (mm) inch (mm) inch (mm)
1 - - - -
20DBBS
2 0.14 (3,6) 0.64 (16,3) 2.14(54,4) 1.64 (41, 7)
3 0.21 (5,3) 0.71 (18,0) 2.14 (54,4) 1.64 (41, 7)
4 0.28 ( 7,1) 0.66 (16,6) 2.14 (54,4) 1.64 (41, 7)
1 - - - -
25DBBS
2 0.18 (4,6) 0.68 (1 7,3) 2.14(54,4) 1.64 (41, 7)
3 0.2 7 (6,8) 0.77 (19,5) 2.14 (54,4) 1.64 (41, 7)
4 0.36 (9,1) 0.86 (21,8) 2.14 (54,4) 1.64 (41, 7)
1 - - - -
38DBBS
2 0.23 (5,9) 0.65 (16,5) 2.39 (60, 7) 1.9 7 (50,1)
3 0.30 ( 7,6) 0.72 (18,2) 2.39 (60, 7) 1.9 7 (50,1)
4 0.40 (10,1) 0.82 (20,8) 2.39 (60, 7) 1.9 7 (50,1)
1 - - - -
50DBBS
2 0.31 ( 7,9) 0.732 (18,6) 2.39 (60, 7) 1.9 7 (50,1)
3 0.4 7 (11,9) 0.888 (22,5) 2.39 (60, 7) 1.9 7 (50,1)
4 0.62(15,8) 1.044 (26,5) 2.39 (60, 7) 1.9 7 (50,1)
* Value shown is GAP after wear adjustment. New or rebuilt brakes may vary slightly from this value due to tolerances.
Figure 5
TABLE 9
POWER HEAD WEIGHTS
Brake Size Approximate Total Weight
Lbs (kg)
20DBBS 271 (59 7)
25DBBS 543 (1195)
38DBBS 1585 (348 7)
50DBBS 3994 (8 787)
DBBS Brakes