Reyco Granning IFS1700S User manual

Motorhome Suspensions
IFS1700S
Owner’s Manual
Reyco Granning Suspensions
1205 Industrial Park Drive
Mount Vernon, MO 65712
Phone: [phone]
Fax: [phone]
1-800-753-0050
w w w. r e y c o g r a nning . c o m
Revision Date: 9/14
Document #: D711987
Revision: C
| Independent Front Suspension
Service Parts
Maintenance Instructions

Table of Contents
D711987 1 IFS1700S
Introduction .................................................................4
Service Notes.....................................................................................................4
Identification......................................................................................................5
Vehicle Towing Information .............................................................................6
Maintenance Schedule.......................................................................................7
Parts Lists ....................................................................9
Unit Assembly...................................................................................................9
Control Arm Components ...............................................................................10
Control Arm Assemblies .................................................................................11
Steering Components ......................................................................................12
Air Spring and Shock Components.................................................................14
Height Control Components............................................................................15
Sway Bar Components (-SB Models Only) ....................................................16
Disc Brake Components..................................................................................17
King Pin Components .....................................................................................18
Steering Knuckle Carrier Components ...........................................................19
Lubrication ................................................................20
Lubricant Specifications and Intervals............................................................20
General Lubrication.........................................................................................20
Ball Joints ........................................................................................................20
Rod Ends on Tie Rods Crank Rod ..................................................................21
Carrier Bearing and Kingpin ...........................................................................21
Wheel Bearings ...............................................................................................22
Troubleshooting.........................................................23
Inspection ...................................................................27
General Inspection...........................................................................................27
Inspecting the Control Arm Bushings for Wear .............................................27
Inspecting the Tie Rod Ends ...........................................................................28
Inspecting the Brake System ...........................................................................28
Brake System .................................................................................................................. 28
Inspecting the ABS Sensor and Tone Ring.....................................................29
Inspecting the Shock Absorber .......................................................................29
Inspecting the Air Spring and Height Control Valve......................................30
Air Spring Inspection...................................................................................................... 30
Height Control Valve Inspection .................................................................................... 30
Inspecting the Idler Arm & Crank Arm Bearings...........................................30
Inspecting the Relay Rod Ball Joints ..............................................................31

Table of Contents
D711987 2 IFS1700S
Seal Inspection ................................................................................................................ 31
Endplay Inspection.......................................................................................................... 31
Inspecting Wheel Bearing Endplay.................................................................31
Inspecting the Knuckle Carrier Bearing and Seal ...........................................32
Inspecting the Kingpin Vertical Endplay........................................................32
Adjustments ...............................................................33
Adjusting Wheel End Play ..............................................................................33
Adjusting Suspension Ride Height .................................................................35
Adjusting the Maximum Wheel Turn Angle ..................................................36
Inspection before Alignment...........................................................................37
Wheels and Tires............................................................................................................. 37
Front Suspension............................................................................................................. 37
Rear Axle and Suspension .............................................................................................. 38
Front Wheel Alignment...................................................................................38
Equipment....................................................................................................................... 38
General............................................................................................................................ 38
Preparation ...................................................................................................................... 39
Adjusting the Camber Angle...........................................................................40
Eccentric Camber Adjustment ........................................................................................ 40
Bar Pin Camber Adjustment ........................................................................................... 42
Adjusting the Caster Angle .............................................................................42
Eccentric Caster Adjustment........................................................................................... 43
Adjusting the Toe-In .......................................................................................44
Repair .........................................................................46
General Procedures..........................................................................................46
Cleaning the Parts............................................................................................46
Ground or Polished Parts ................................................................................................ 46
Rough Parts..................................................................................................................... 47
Drying ............................................................................................................................. 47
Preventing Corrosion ...................................................................................................... 47
Replacing Tie Rod Ends..................................................................................47
Removal .......................................................................................................................... 47
Installation....................................................................................................................... 47
Replacing the Relay Rod Ball Joints...............................................................48
Removal .......................................................................................................................... 48
Installation....................................................................................................................... 48
Replacing the Bell Crank, Idler Arm, and Crank Arm Bearings ....................48
Removal .......................................................................................................................... 49
Installation....................................................................................................................... 49
Replacing the Upper and Lower Control Arm Bushings ................................49
Upper Control Arm Removal.......................................................................................... 50
Upper Control Arm Installation ...................................................................................... 50

Table of Contents
D711987 3 IFS1700S
Lower Control Arm Removal ......................................................................................... 50
Lower Control Arm Installation...................................................................................... 51
Replacing Wheel Bearings, Oil Seals, and Hub Caps.....................................51
Removal .......................................................................................................................... 52
Installation....................................................................................................................... 53
Replacing Brake Components.........................................................................55
Brake Rotors ................................................................................................................... 55
Brake Chambers.............................................................................................................. 55
Other Brake Components................................................................................................ 55
Replacing the ABS Sensor and Tone Ring .....................................................55
Sensor Removal .............................................................................................................. 55
Sensor Installation........................................................................................................... 55
Tone Ring Removal and Installation .............................................................................. 56
Replacing the Shock Absorber........................................................................56
Removal .......................................................................................................................... 56
Installation....................................................................................................................... 56
Replacing the Air Spring.................................................................................56
Removal .......................................................................................................................... 56
Installation....................................................................................................................... 56
Replacing the Height Control Valve ...............................................................57
Removal .......................................................................................................................... 57
Installation....................................................................................................................... 57
Replacing the Sway Bar and Components ......................................................57
Vertical Linkage Removal .............................................................................................. 57
Vertical Linkage Installation........................................................................................... 57
Sway Bar Removal ......................................................................................................... 57
Sway Bar Installation...................................................................................................... 57
Replacing the Steering Knuckle Carrier Bearings ..........................................58
Removal .......................................................................................................................... 58
Installation....................................................................................................................... 59
Torque Tables............................................................61

Introduction
D711987 4 IFS1700S
Introduction
Service Notes
This Service Manual describes the correct service and repair procedures for the
Reyco Granning
®IFS1700S Independent Front Suspension model with 17,000 lbs Gross
Axle Weight Rating (GAWR). Overloading the suspension may result in adverse ride and
handling characteristics.
You must read and understand all procedures and safety precautions presented in this manual
before conducting any service work on the suspension.
Proper tools must be used to perform the maintenance and repair procedures in this manual.
Some procedures require the use of special tools for safe and correct service. Failure to use
the proper and/or special tools when required can cause personal injury and/or damage to
suspension components.
You must follow your company safety procedures and use proper safety equipment when you
service or repair the suspension.
The information contained in this manual was current at the time of printing and is subject to
change without notice or liability.
Reyco Granning
®reserves the right to modify the
suspension and/or procedures and to change specifications at any time without notice and
without incurring obligation.
Reyco Granning
®uses the following types of notices for potential safety problems and to
give information that will prevent damage to equipment.
WARNING
A warning indicates procedures that must be followed exactly. Serious personal
injury can occur if the procedure is not followed.
CAUTION
A caution indicates procedures that must be followed exactly. Damage to equipment
or suspension components and personal injury can occur if the procedure is not
followed.
NOTE
A note indicates an operation, procedure or instruction that is important for correct
service.

D711987 5 IFS1700S
Identification
The suspension model and serial number are stamped on an aluminum tag that is riveted to
the front of the suspension sub-frame assembly (Figure 1). The serial number is used by
Reyco Granning
®for control purposes and should be referred to when servicing the
suspension or requesting technical support (Figure 2).
Figure 1 - Suspension Identification Location
Figure 2 - Suspension Serial Number Tag
Model
GAWR
(lb)
Wheel
Cut
Disc
Brakes
Sway
Bar
Height Control
IFS1700S
17,000 55° Bendix
ADB22X
No
Valve
Dual
IFS1700S-SB
Yes
Single
IFS1700S-SHC
No
Electronic
Sensor
Dual
IFS1700S-SHCSB
Yes
Single
Table 1 - Model Identification

D711987 6 IFS1700S
Vehicle Towing Information
If a vehicle is disabled and needs to be towed by the front end to service center, check the
OEM/Coach Builder towing procedures for the recommended method. Check with local
authorities and Department of Transportation (DOT) for permissible towing methods before
towing. Some states do not permit towing by chains and/or straps.
The preferred towing apparatus is the type that cradles the front tires. If the towing apparatus
cannot be attached to the front tires or directly to the chassis frame rails, then the suspension
sub-frame may be used for attachment.
WARNING
Attaching towing equipment to improper locations and failure to utilize OEM/Coach
Builder recommended towing methods could result in one or more of the following:
··Loss of vehicle control.
··Possible disconnection from tow vehicle.
··Damage to the suspension and/or vehicle.
Do Not attach tow apparatus (hooks, chains, straps, etc.) to suspension upper and lower
control arms, sway bar and brackets, brake components, tie rods, steering arm assemblies, or
steering knuckle carrier assemblies (Figure 3).
Figure 3 –Improper Tow Equipment Attachment Locations

D711987 7 IFS1700S
Maintenance Schedule
GENERAL
MAINTENANCE SERVICE TO BE PERFORMED MILEAGE IN THOUSANDS
12 24 36 48 60 72 84 96
Steering Arm Assembly Ball
Joints
Check axial endplay X X
2
Inspect for ruptured seals X X X X X X X X
2
Check thatcotter pin is installed X X X X X X X X
2
Control Arm Bushings Check bolt torque X X
2
Inspect for control arm and mount contact X X X X X X X X
2
Inspect for bushing wear
X
X
X
X
X
X
X
X2
Tie Rod Ends
Inspect ball socket endplay
X
X
X
X
X
X
X
X2
Check for taperconnection looseness
X
X
X
X
X
X
X
X2
Check cotter pin installation X X X X X X X X
2
Brake System Inspect Brake Pads for excessive or uneven wear X X X X
2
Inspect Brake Caliper for minimum free play X X X X
2
Inspect for Air Leaks using soapy water solution X
Air Springs Inspect for proper clearance (1” minimum all around)X
Check upper mount nut and lower mount bolt torque X
Inspect for signs of chafing or wear X X X X X X X X
2
Inspect for air leaks using soapy water solution X
Height Control Valve and
Linkage
Inspect for signs of bending, binding, or slippage X X X X X X X X
2
Inspect for air leaks using soapy water solution X
Shock Absorbers Check mounting nut torque X
Inspect shocks for signs of fluid leak, broken eye
ends, loose fasteners, or worn bushings
X X X X X X X X
2
Kingpins Check for wear X X
2
Inspect vertical endplay X X
2
Steering Arm Assembly
Bearings
Check Mounting Nut torque X X
2
Inspect bearings for excessive radial play X X X X X X X X
2
Carrier Bearings Check axial endplay X
2
Wheels Check Wheel Bearing endplay X X
2
Check Wheel Nut torque
1
X X X X X X X X
2
Front Alignment Inspect toe-in
3
X X X X
2
Air Fittings and Air Lines Inspect for air leaks using soapy water solution X
Inspect for signs of chafing, cracking, or wear X X X X X X X X
2
Sway Bar Bushings
Check mounting bolt torque
X
X2
Inspect for bushing wear X X X X X X X X2
1. Wheel Nuts must be re-tightened to propertorque specifications as per the vehicle or chassis manufacturer’s Owner Guide
2. Continue to perform specified maintenance every 12,000 miles or at previous interval
3. Final stage manufacturer should complete toe-in inspection and adjustment after completion of vehicle

D711987 8 IFS1700S
Maintenance Record
Name of Owner: Address of Owner:
Date of Purchase: Name and Address of Dealer:
Model of Vehicle: Vehicle Identification Number:
Suspension Model Number:
IFS1700S; IFS1700S-SB;
IFS1700S-SHC;
IFS1700S-SHCSB
Suspension Serial Number:
Inspection and Maintenance Item Date Mileage Service Performed

D711987 9
Parts Lists
Unit Assembly
Item Part No. Description Item Part No. Description
1
711511-01
Sub frame Assembly
9
707819-01
Hub and Rotor Assembly
2
700944-01
Lower Control Arm Assembly
10
705951-01
Air Spring Assembly
3
703182-01
Upper Control Arm Assembly
11
See Note
Shock Assembly
4
700245-01
Boss, Eccentric
700178-06
Standard Shock (01/21/13 & Prior)
5
705633-01
Carrier Assembly, LH
700178-08
Comfort Valve Shock (01/22/13 & After)
6
705633-02
Carrier Assembly, RH
12
700973-01
Tie Rod Assembly, LH
7
705013-17
Caliper Assembly, LH
13
702030-01
Relay Rod
8
705013-18
Caliper Assembly, RH
14
700973-02
Tie Rod Assembly, RH
Note: Contact ReycoGranning LLC with Unit Serial Number to determine Build Date & Original Shock P/N (Always Replace in Pairs)

D711987 10 IFS1700S
Control Arm Components
Item Part No. Description Item Part No. Description
1
703182-01
Assembly, Upper Control Arm
7
293
Socket Set Screw 10-24 x .38”
2
700944-01
Assembly, Lower Control Arm
8
701683-04
Hardened Flat Washer, 7/8”
3
700245-01
Boss, Eccentric
9
100039-P1
Hex Head Bolt 3/4-10 x 2.75, Gr. 8, Zn
4
8490
Spacer
10
702516-02
Hex Head Bolt 1 1/8-12 x 7.75, Gr. 8, ZY
5
292
Hex Head Bolt 7/8-9 x 8.50, Gr. 8, ZN
11
168
Hardened Flat Washer, 1 1/8”
6
100122-P1
Lock Nut 7/8-9”, Gr. C
12
166
Lock Nut 1 1/8-12, Gr. C

D711987 11 IFS1700S
Control Arm Assemblies
Item Part No. Description Item Part No. Description
1
703181-01
Upper Control Arm, LH & RH
3
8382
Bushing
2
700939-01
Lower Control Arm, LH & RH

D711987 12 IFS1700S
Steering Components
Item Part No. Description Item Part No. Description
1
700973-01
Tie Rod Assembly, LH
13
705382-02
1 Slotted Nut, M20x1.5
2
700973-02
Tie Rod Assembly, RH
14
705382-03
1 Cotter Pin, 1.40 x .15 Dia.
3
701924-01
Crank Arm Assembly
15
701925-01
Crank Arm
4
700973-05
Crank Rod Assembly
16
700949-01
Bell Crank
5
705619-01
Bell Crank Assembly
17
700951-01
Idler Arm
6
702030-01
Relay Rod
K710622
Kit, Bearing Replacement
7
705620-01
Idler Arm Assembly
18
8654
2, 3 Shim
8
167
3 Hex Head Bolt 1-14 x 6”, Gr. 8
19
701378-01
2 Bearing
9
89422312
3 Lock Nut 1”, Gr. C
20
6966
2, 3 Snap Ring
10
2571
3 Hardened Flat Washer 1”
21
7348
2 Spacer
11
101445-P1
Cotter Pin- 1/8 X 1 1/2
K712871-01
High Friction Pivot Shaft Kit
K705382
Kit, Ball Joint and Hardware
22
7348-050
3 Bearing Spacer Shaft
12
705382-01
1 Ball Joint (40mm)
23
712869-01
3 Friction Washer
1) Components of Ball Joint Kit K705382
2) Components of Bearing Replacement Kit K710622
3) Components of High Friction Pivot Shaft Kit K712871-01

D711987 13 IFS1700S
Tie Rod Assemblies
Item Part No. Description Item Part No. Description
1
103712
Tie Rod End, RH
5
101445-P1
Cotter Pin (Not Shown)
2
6632
Clamp
6
710671-01
Tie Rod End, LH
3
700971-01
Tube, Tie Rod
7
700971-02
Tube, Crank Rod
4
103736
Tie Rod End, LH
8
710671-02
Tie Rod End, RH

D711987 14 IFS1700S
Air Spring and Shock Components
Item Part No. Description Item Part No. Description
1
705951-01
Air Spring Assembly
10
89422850
HFW 5/8”
2
See Note
Shock Assembly
11
706026-01
Brake Line Bracket, LH
700178-06
Standard Shock (01/21/13 & Prior)
706026-02
Brake Line Bracket, RH
700178-08
Comfort Valve Shock (01/22/13 & After)
12
152
HFW 3/4” (Used as Spacers on Forward Side)
3
705692-01
Cast Lower Air Spring Mount, LH
13
302
FHB 3/8-16 x 1.25" Gr. 8 ZN
705692-02
Cast Lower Air Spring Mount, RH
14
208
LFN 3/4-10, Gr. G, ZN
4
707357-01
Lower Shock Mount
15
8131017
FW 3/4" .812 x 1.469 x .134, ZP
5
263
HFW 3/8"
16
100678-P1
HHB 3/4-10 x 3.5, Gr. 8, ZN
6
8120382
SLW 3/8”
17
149
HHB 5/8-18 x 3.00, Gr. 8, ZN
7
100263-P1
HHB 3/8-16 x 1, Gr. 8, ZN
18
706899-01
Height Control Arm
8
276
FHB 1/2-13x1.75 GR.8
19
100727-P1
HHB 3/4-10 x 4.00, Gr. 8, ZN
9
100039-P1
HHB 3/4-10 x 2.75, Gr. 8, ZN
20
700184-04
HHB 5/8-18 x 1 3/4, Gr. 8, ZN
Note: Contact ReycoGranning LLC with Unit Serial Number to determine Build Date & Original Shock P/N (Always replace in Pairs)

D711987 15
Height Control Components
Item Part No. Description Item Part No. Description
10
5608
Height Control Valve (Standard)
17
703915-01
Linkage Assembly Kit
705378-01
Height Control Sensor, Electronic (SHC Model)
17.1
Height Control Linkage 90º 5/16-18
11
702606-02
HHB 1/4-20 x 1.25”, Gr. 8, ZN
17.2
Height Control Linkage 5-1/8”
12
8120392
Flat Washer 1/4”
17.3
Hex Nut ¼-20 UNC GR5 ZN
13
100703-P1
Lock Nut 1/4”
17.4
Split Lock Washer Ø1/4
14
705932-01
Pin
17.5
Split Lock Washer Ø15/16
15
705967-01
1/4” Nylock Nut
17.6
Hex Nut 5/16-18 GR8 ZN
16
705967-02
5/16” Nylock Nut

D711987 16 IFS1700S
Sway Bar Components (-SB Models Only)
Item Part No. Description Item Part No. Description
1
703124-01
Sway Bar
8
118
**FW 1/2”
2
703165-01
Assembly, Mount, UCA, Sway Bar
9
102550
**HHB 1/2-13 x 2.75, Gr. 8, Zinc
K706842
Kit, Sway Bar Mount
10
700144-23
**HHB 1/2-13 x3.50, Gr. 8, Zinc
3
703127-03
*Link, UCA, Sway Bar
11
8455001
**HHB 1/2-13 x 2.00, Gr. 8, Zinc
4
703128-01
*Mount, UCA, Sway Bar
12
307
**FHB 1/2-13 x 1.50, Gr. 8, Zinc
5
702895-02
*Bushing, Split, Sway Bar
13
702898-01
**Washer, Cut, Sway Bar
6
702894-01
*Mount, D-Ring Sway Bar
14
89422299
**LN 7/16-14, Gr. 8
K705273
Kit, Sway Bar Fasteners
15
89422301
**LN 1/2-13, Gr. 8, Zinc
7
702797-01
**FHB 7/16-14 x 1.25, Gr. 8, ZP
* Items included with K706842
** Items included with K705273

D711987 17 IFS1700S
Disc Brake Components
Item Part No. Description Item Part No. Description
1
266
Flange Head Bolt 5/16-18x.75, Gr. 5, ZC
13
705011-27
ABS Sensor Bushing
2
7328
ABS Sensor (Straight w/Lead)
14
705084-01
Oil Seal Assembly
3
6946
ABS Sensor Spring Retainer
15
705013-15
Torque Plate Assembly, LH
4
705011-01
Steering Knuckle Assembly, LH
705013-16
Torque Plate Assembly, RH
705011-02
Steering Knuckle Assembly, RH
16
1786
Hub Cap Gasket
5
8223752
Hex Head Bolt ¾-16 x 2, Gr. 8, ZN
17
700690-04
Hex Head Bolt M20x1.5-50 Gr. 10.9
6
705051-01
Bearing Cone - Inner
18
705013-17
Caliper Assembly, LH
705051-02
Bearing Cup - Inner
705013-18
Caliper Assembly, RH
7
705052-01
Bearing Cone - Outer
705013-04
Brake Pads (Set of 4)
705052-02
Bearing Cup - Outer
19
703553-02
HFW M20 ZN
8
705017-01
Arm, Steering, LH
20
89422308
Lock Nut ¾-16 x .75, Gr. G, PH
705017-02
Arm, Steering, RH
21
103003
HFW 3/4”
9
705011-21
Castle Nut 1¼ - 12
22
708181-01
Nut, Spindle, Pro-Torq
10
705011-26
Key
23
709226-01
Hub Cap
11
705011-22
Assembly, Steering Stop
24
707819-01
Hub and Rotor Assembly
12
705011-20
Cotter Pin 3/16 x 2-1/2
48
5
2
3
9
1
7
6
11
20 21
15
14
13 12
18
22 16
23
24
10
17
19

D711987 18
King Pin Components
Item Part No. Description Item Part No. Description
1
705011-07
Shim, .005”thick
7
705011-17
Cap, King Pin
2
705011-08
Shim, .010”thick
8
705011-18
O-Ring
3
705011-09
Shim, .020”thick
9
705011-19
King Pin
4
705011-14
Assembly, Bearing, Thrust
10
705315-01
Draw Key, (Long 3.80)
5
705011-15
Bolt, King Pin Cap
11
705316-01
Nut, Draw Key
6
705011-16
Grease Fitting, Straight