Usage:
The new seal groups are quite different from the former standard lip-type seals. The difference is the hydrodynamic grooves in the sealing lip of the new seal. These grooves in the seal lip move lubrication oil back into the engine crankcase as the crankshaft turns. Because of this seal lip design, the front seal for an engine is different from the rear seal group. The installed position of the seal lip grooves is important, because the grooves are very sensitive to the direction of crankshaft rotation. Each seal is marked with an arrow to show the direction of shaft rotation for which the seal can be used. If a specific seal group is installed on the wrong end of an engine, lubrication oil can actually be taken out of an engine, because the grooves in the seal lip are in the wrong direction in relation to crankshaft rotation. Special handling procedures and seal installation instructions for specific engines are given on the pages that follow.
1 Use The Correct Tools For Seal Group Installation
Some additional new tools, along with some existing tools, are needed to install the seal groups. Be sure to use the correct installation tools to maintain the necessary seal-to-wear sleeve relationship.
2 Separation Of The Seal From The Sleeve Is Not Permissible
The material in the large lip of the seal can be damaged easily. Fingers, fingernails, wires or the edge of the sleeve can put a scratch on the surface of the seal lip. It is possible that a scratch or a rub (which can not be seen) from a finger, can damage the seal enough that it can not be used. In these seal groups, the sleeve is installed in the seal, by the seal group supplier, for two very good reasons, as follows:
- A. To give better protection to the special material on the seal lip.
- B. To make for easier installation. The seal and the sleeve are installed, both at the same time.
3 Once There Is Separation Of A Seal And Sleeve, They Must Not Be Used Again
Once there is separation of a sleeve and seal, one from the other, they can not be used again. When you try to put the seal on the sleeve, or the sleeve in the seal, the sleeve will always damage the seal, and neither part can be used again. Always install a new seal group if there is separation of these two parts.
4 Used Seal Groups - Do Not Use Again
During the disassembly procedure for engine reconditioning, the seal is separated from the wear sleeve. This means that the sleeve must not be used again. The lip of the seal will be damaged if it is installed over the wear sleeve. Destroy the original wear sleeve and seal. Install the correct seal group at time of engine assembly.
5 Install Only Those Seal Groups That Are Still Assembled By The Seal Group Supplier
See items 2, 3 and 4. If during group installation, there is separation of the seal from the wear sleeve, remove and destroy both parts. Install a new seal group.
6 Seal Groups Are To Be Installed Dry (No Lubrication)
Do not use any type of lubrication during installation of the seal group. The seal group will install quite easily without lubrication, if the correct tools and procedure are used for the installation.
NOTE: If any type of lubrication is used in the installation of the seal group, the result can be an early failure of the seal.
3200 Series Engines
Tools needed are as follows: 5P290 Locator (1), 5P7293 Installer (2), 9S8858 Nut (3) and 1P5515 Bolt (4).
A Installation Of Crankshaft Rear Seal Group - 3208 Engines
1 Use 1P5515 Bolts (4) to fasten 5P290 Locator (1) to the rear of the crankshaft.
2 Use 6V1541 Quick Cure Primer to clean outer diameter (A) of the crankshaft rear flange and inside diameter (B) of the wear sleeve. Put 9S3265 Retaining Compound on outer diameter (A) of the crankshaft rear flange, and on inside diameter (B) of the wear sleeve.
3 Put the seal group (wear sleeve and seal) on locator (1). Put 5P7293 Installer (2) on locator (1), then install nut (3). Put lubricant on face (C) of the washer on nut (3). Tighten nut (3) until installer (2) comes in contact with locator (1).
3300 Series Engines
Tools needed are as follows: 9S887l Locator (1), 6V7876 Installer (2), 6V7877 Installer (3), 9S8858 Nut (4), 9S8890 Bolt (5).
A Installation Of Crankshaft Rear Seal Group
2 Use 6V1541 Quick Cure Primer to clean outer diameter (A) of the crankshaft flange, and inside diameter (B) of the wear sleeve. Put 9S3265 Retaining Compound on outer diameter (A) of the crankshaft flange, and on inside diameter (B) on the wear sleeve.
3 Put the seal group (wear sleeve and seal) on locator (1). Use the correct installer (2) or (3) on locator (1), then install 9S8858 Nut (4). Put lubricant on face (C) of the washer on nut (4). Tighten nut (4) until the installer comes in contact with locator (1).
NOTE: Use 6V7876 Installer (2) for all engines that have a rear group that is not engine oil lubricated.
Use 6V7877 Installer (3) for all engines that have a rear group that is engine oil lubricated. (For Example: the 963 and 973 Track-Type Loaders have a rear gear group that is engine oil lubricated.)
3400 Series Engines
Tools needed are as follows: 5P1733 Locator (1), 5P7301l Locator (2), 5P3594 Locator (3), 6V6142 Installer (4), 6V6143 Installer (5), 8T2855 Installer (6), 8T2683 Installer (7), 9S8858 Nut (8), 5P7310 Bolts (9), 5P7309 Bolts (10), 5P1737 Bolts (11), 1T720 Bolts (12), 8T2856 Bar (13).
A Installation Of Crankshaft Front Seal Group - All 3400 Series Engines
2 Use 6V1541 Quick Cure Primer to clean outer diameter (A) of the crankshaft flange, and inside diameter (B) of the wear sleeve. Put 9S3265 Retaining Compound on outside diameter (A) of the crankshaft flange and inside (B) of the wear sleeve.
3 Put the seal group (wear sleeve and seal) on locator (1). Put 6V6142 Installer (4) on locator (1), then install 9S8858 Nut (8). Put lubricant on face (C) of the washer on nut (8), then tighten nut (8) until installer (4) comes in contact with locator (1).
4 Some models of the 3400 Series Engine have a front housing that has a counterbore for installation of the original equipment part number crankshaft seal. A new style crankshaft seal group (see front page for description) can not be installed as a replacement front seal for these engines unless a modification is made to the seal counterbore in the front housing. See the list that follows for the effected models.
- 3406 Truck3406 Industrial3406 Marine3406 Vehicular3408 Truck3408 Industrial92U1-92U1151590U1-90U396091U1-91U72070V1-70V412828V1-28V94867U1-67U13343408 Marine3408 Vehicular3412 Industrial3412 Marine3412 Vehicular99U1-99U112748W1-48W3845*38S1-38S172760M1-60M43873W1-73W123**
*Some 3408 Vehicular Engines, S/N 48W3846-48W5766, that are in 768C Tractors or 769C Trucks may also have a counterbore in the front housing.
5 The bore for the crankshaft seal, in the front housing of the listed engines or machines, is 186.093 Ø ± 0.038 (7.3265" Ø ± .0015"). This front housing can be modified to use the new seal group by increasing the size of the seal bore to 186.144 Ø ± 0.038 (7.3285" Ø ± .0015"). This bore size must go completely through the housing.
NOTE: For ONLY those housings that have been modified (see steps 4 and 5), use 6V1541 Quick Cure Primer to clean the bore in the front housing, then put 9S3265 Retaining Compound on the outside diameter of the seal before it is installed.
6 Install the seal according to the procedure given in the previous steps of this topic.
**Some 3412 Vehicular Engines, S/N 73W124-73W484, that are in 772B Tractor or 773B Trucks may also have a counterbore in the front housing.
B Installation Of Crankshaft Rear Seal Group - All Standard Engines
2 Use 6V1541 Quick Cure Primer to clean outside diameter (A) of the crankshaft flange, and inside diameter (B) of the wear sleeve. Put 9S3265 Retaining Compound on outside diameter (A) of the crankshaft flange, and on inside diameter (B) of the wear sleeve.
3 Put the seal group (wear sleeve and seal) on locator (1). Put 6V6143 Installer (5) and 9S8858 Nut (8) on locator (1). Put lubricant on face (C) of the washer on nut (8), then tighten nut (8) until installer (5) comes in contact with locator (1).
C Installation Of Crankshaft Rear Seal Group - Engines With Rear Gear Group
1 Use two 5P7309 Bolts (10) 108 (4.25") long, or two 5P7310 Bolts (9) 146 (5.75") long, to fasten 5P7301 Locator (2) to the rear of crankshaft.
2 Use 6V1541 Quick Cure Primer to clean outside diameter (A) of gear and inside diameter (B) of the wear sleeve. Put 9S3265 Retaining Compound on outside diameter (A) of the gear and inside diameter (B) of the wear sleeve.
3 Put the seal group (wear sleeve and seal) on locator (2). Put 8T2683 Installer (7) and 9S8858 Nut (8) on locator (2). Put lubricant on face (C) of the washer on nut (8), then tighten nut (8) until installer (7) comes in contact with locator (2).
D Installation Of Seal Group For BrakeSaver
1 Use four S1594 Bolts to fasten 8T2856 Bar (13) to the rotor and housing as shown.
2 Use two 1T720 Bolts (12) to fasten 5P3594 Locator (3) to the rear of the rotor assembly. Use 6V1541 Quick Cure Primer to clean outside diameter (A) of the rotor flange, and inside diameter (B) of the wear sleeve. Put 9S3265 Retaining Compound on outside diameter (A) of the rotor flange and inside diameter (B) of the wear sleeve.
3 Put the seal group (wear sleeve and seal) for the rear of the BrakeSaver on locator (3). Put 8T2855 Installer (6) and 9S8858 Nut (8) on locator (3). Put lubricant on face (C) of the washer on nut (8), then tighten nut (8) until installer (6) is against locator (3).
4 Use one S1594 Bolt to fasten 8T2856 Bar (13) to the rotor as shown.
5 Use two 1T720 Bolts (12) to fasten the 5P3594 Locator (3) to the front of the rotor assembly. Use 6V1541 Quick Cure Primer to clean the outside diameter of the rotor flange, and the inside diameter of the wear sleeve. Put 9S3265 Retaining Compound on the outside diameter of the rotor flange and the inside diameter of the wear sleeve.
6 Put the seal group (wear sleeve and seal) for the front of the BrakeSaver on locator (3). Put 8T2855 Installer (6) and 9S8858 Nut (8) on locator (3). Put lubricant on face (C) of the washer on nut (8), then tighten nut (8) until installer (6) is against locator (3).
NOTE: It may be necessary to use a wrench (14) to hold bar (13) as shown. This will prevent the rotor from turning while installing the rear seal group by tightening nut (8).
3500 Series Engines
Tools needed are as follows: 6V4003 Locator (1), 6V4004 Installer (2), 8T3099 Installer, 9S8858 Nut, 2N5006 Bolts (5), 5/16"-18 NC X 101 (4.00") long pins (6), 6V4002 Bracket (7), 6V4001 Ring (8). Also needed are four 1D4716 Nuts 5/16"-18 thread (not shown).
A Installation Of Front Or Rear Seal Group And/Or Adapter Group - All Engines With 1W6974 Or 1W6977 Seal Group And 1W6975 Or 1W6978 Adapter Group
NOTE: Refer to the charts that follow for the installation location of each adapter group and/or seal group.
AInstallation Location on Engine.
1 Put 6V4002 Brackets (7) on a smooth flat surface with the studs up as shown. Install a 1W6975 or 1W6978 Adapter Group (C) on brackets (7), so each of the four studs is through a mounting bolt hole in the adapter group. (The seal bore must face up.)
2 Put the specific seal group on adapter (C). The chamfer on the inside diameter of the wear sleeve must be up (toward the mechanic).
3 Put 6V4001 Ring (8) over the bracket studs. Install the nuts on the studs, and tighten them evenly to push the seal into the adapter until the seal comes in contact with the bottom of the bore.
4 Use two 2N5006 Bolts (5) to fasten 6V4003 Locator (1) to the crankshaft. Use 6V1541 Quick Cure Primer to clean the outside diameter of the crankshaft flange and the inside diameter of the wear sleeve. Put 9S3265 Retaining Compound on the outside diameter of the crankshaft flange and the inside diameter of the wear sleeve.
5 Install guide pins (6) in the top two mounting holes for adapters. Put adapter group (C) on guide pins (6) and locator (1).
6 Put 6V4001 Ring (8) over the small diameter of 6V4977 Installer (2). Put the complete assembly on locator (1), then install 9S8858 Nut (4). Put lubricant on face (D) of nut (4), then tighten the nut until installer (2) is against locator (1).
BGroup Part Number.
B Installation Of Front Or Rear Seal Group - All Engines With A Seal Bore In The Flywheel Housing Or Front Cover
AInstallation Location on Engine.
2 Use 6V1541 Quick Cure Primer to clean outer diameter (A) of the crankshaft flange, and inside diameter (B) of the wear sleeve. Put 9S3265 Retaining Compound on outside diameter (A) of crankshaft flange and inside diameter (B) of the wear sleeve.
3 Put the seal group (wear sleeve and seal) on locator (1). Put 8T3099 Installer (3) and 9S8858 Nut (4) on locator (1). Put lubricant on face (C) of the washer on nut (4), then tighten nut (4) until the installer (3) is against locator (1).
BGroup Part Number.