S&S Cycle Gear Drive Cams for Harley-Davidson Twin Cam 88 Engines User Manual
Page 8
S&S
®
Gear Drive Cams Assembly Parts
1.
Gasket, Cam Cover ....................................................31-2032
2.
Bearing, Needle, Inner Cam (2)................................31-4080
3..
Bearing, Outer Cam, Ball..........................................31-4081
4.
Gear, Pinion ................................................................33-4160
5..
Gear, Cam Drive
(Includes reference #12, 13 & 16) ............................33-4271
6..
Gear, Camshaft, Front
(Includes reference #15)............................................33-4272F
7..
Gear, Camshaft, Rear
(Includes reference #15)............................................33-4272R
8..
Kit, Gear Drive Cams
(Includes reference #4-7, 12, 13, 15 & 16) ..............33-4275
9..
Kit, Gear Drive Cams Outer Gears
(Includes reference #4, 5, 12, 13 & 16)....................33-4276
10.. Kit, Chain Drive Camshaft Installation
(Includes reference #1-3, 11 & 14) ...........................33-5163
11.. Screw, HHC
5
⁄
16
"-18 x
3
⁄
4
" .............................................50-0100
12.. Screw, SHC
3
⁄
8
" -24 x 1
3
⁄
4
"............................................50-0132
13.. Washer, Flat
3
⁄
8
"x 1
1
⁄
8
"x .225".....................................50-7056
14.. Ring, Retaining ..........................................................50-8061
15.. Key, Woodruff .125 x .5 (2).......................................50-8223
16.. Key, .188 x .150 x .57 .................................................50-8226
17.. Camshaft, Front, 510G ..............................................33-5173F
Camshaft, Front, 570G ..............................................33-5165F
Camshaft, Front, 585G ..............................................33-5167F
Camshaft, Front, 625G ..............................................33-5169F
Camshaft, Front, 640G ..............................................33-5171F
18.. Camshaft, Rear, 510G................................................33-5173R
Camshaft, Rear, 570G................................................33-5165R
Camshaft, Rear, 585G................................................33-5167R
Camshaft, Rear, 625G................................................33-5169R
Camshaft, Rear, 640G................................................33-5171R
19.. Kit, Camshaft, 510G
(Includes reference #6, 7, 15, 17 & 18)....................33-5174
Kit, Camshaft, 570G
(Includes reference #6, 7, 15, 17 & 18)....................33-5166
Kit, Camshaft, 585G
(Includes reference #6, 7, 15, 17 & 18)....................33-5168
Kit, Camshaft, 625G
(Includes reference #6, 7, 15, 17 & 18)...................33-5170
Kit, Camshaft, 640G
(Includes reference #6, 7, 15, 17 & 18)....................33-5172
8
F.
Replace any remaining parts removed to facilitate gear
drive cams installation. Check engine oil level. Start
engine and check for leaks.
NOTE: Engine may require several miles at normal operating
temperature for lifters to fill with oil and quiet valve train.
Service
If crankshaft or cam drive sprocket needs to be removed, S&S
®
recommends using a small wheel puller like NAPA
®
#775-9064.
Loosen and unscrew gear bolt until bolt flange is about .600" from
shaft. To avoid damaging shaft internal threads, let puller screw
push against head of gear bolt until gear breaks free from shaft.
For replacement purposes, camshafts and camshaft gears are
available separately.
Use a hydraulic press to remove and install camshaft gears.
Always use new keys, 6oq green Loctite
®
, and make sure correct
gear is mated with correct camshaft. See Figure 7.
Timing marks on camshaft gears should face cam lobes.