SRAM Guide T Caliper User manual

Guide™T Caliper
GEN.0000000005632 Rev C
© 2019 SRAM, LLC
service
manual

SRAM® LLC WARRANTY
EXTENT OF LIMITED WARRANTY
Except as otherwise set forth herein, SRAM warrants its products to be free from defects in materials or workmanship for a period of two years after
original purchase. This warranty only applies to the original owner and is not transferable. Claims under this warranty must be made through the
retailer where the bicycle or the SRAM component was purchased. Original proof of purchase is required. Except as described herein, SRAM makes
no other warranties, guaranties, or representations of any type (express or implied), and all warranties (including any implied warranties of
reasonable care, merchantibility, or fitness for a particular purpose) are hereby disclaimed.
LOCAL LAW
This warranty statement gives the customer specific legal rights. The customer may also have other rights which vary from state to state (USA), from
province to province (Canada), and from country to country elsewhere in the world.
To the extent that this warranty statement is inconsistent with the local law, this warranty shall be deemed modified to be consistent with such law,
under such local law, certain disclaimers and limitations of this warranty statement may apply to the customer. For example, some states in the United
States of America, as well as some governments outside of the United States (including provinces in Canada) may:
a. Preclude the disclaimers and limitations of this warranty statement from limiting the statutory rights of the consumer
(e.g. United Kingdom).
b. Otherwise restrict the ability of a manufacturer to enforce such disclaimers or limitations.
FOR AUSTRALIAN CUSTOMERS:
This SRAM limited warranty is provided in Australia by SRAM LLC, 1000 W. Fulton Market, 4th Floor, Chicago, IL, 60607, USA. To make a warranty claim
please contact the retailer from whom you purchased this SRAM product. Alternatively, you may make a claim by contacting SRAM Australia, 6 Marco
Court, Rowville 3178, Australia. For valid claims SRAM will, at its option, either repair or replace your SRAM product. Any expenses incurred in making
the warranty claim are your responsibility. The benefits given by this warranty are additional to other rights and remedies that you may have under
laws relating to our products. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a
replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have
the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
LIMITATIONS OF LIABILITY
To the extent allowed by local law, except for the obligations specifically set forth in this warranty statement, in no event shall SRAM or its third party
suppliers be liable for direct, indirect, special, incidental, or consequential damages.
LIMITATIONS OF WARRANTY
This warranty does not apply to products that have been incorrectly installed and/or adjusted according to the respective SRAM user manual. The
SRAM user manuals can be found online at sram.com, rockshox.com, avidbike.com, truvativ.com, or zipp.com.
This warranty does not apply to damage to the product caused by a crash, impact, abuse of the product, non-compliance with manufacturers
specifications of usage or any other circumstances in which the product has been subjected to forces or loads beyond its design.
This warranty does not apply when the product has been modified, including, but not limited to any attempt to open or repair any electronic and
electronic related components, including the motor, controller, battery packs, wiring harnesses, switches, and chargers.
This warranty does not apply when the serial number or production code has been deliberately altered, defaced or removed.
This warranty does not apply to normal wear and tear. Wear and tear parts are subject to damage as a result of normal use, failure to service
according to SRAM recommendations and/or riding or installation in conditions or applications other than recommended.
WEAR AND TEAR PARTS ARE IDENTIFIED AS:
• Dust seals
• Bushings
• Air sealing o-rings
• Glide rings
• Rubber moving parts
• Foam rings
• Rear shock mounting
hardware and main seals
• Upper tubes (stanchions)
• Stripped threads/bolts (aluminium,
titanium, magnesium or steel)
• Brake sleeves
• Brake pads
• Chains
• Sprockets
• Cassettes
• Shifter and brake cables
(inner and outer)
• Handlebar grips
• Shifter grips
• Jockey wheels
• Disc brake rotors
• Wheel braking surfaces
• Bottomout pads
• Bearings
• Bearing races
• Pawls
• Transmission gears
• Spokes
• Free hubs
• Aero bar pads
• Corrosion
• Tools
• Motors
• Batteries
Notwithstanding anything else set forth herein, the battery pack and charger warranty does not include damage from power surges, use of improper
charger, improper maintenance, or such other misuse.
This warranty shall not cover damages caused by the use of parts of dierent manufacturers.
This warranty shall not cover damages caused by the use of parts that are not compatible, suitable and/or authorised by SRAM for use with SRAM
components.
This warranty shall not cover damages resulting from commercial (rental) use.

3
TABLE OF CONTENTS
SRAM GUIDE BRAKE SYSTEMS SERVICE.......................................................................................................................................................5
CALIPER SERVICE ...............................................................................................................................................................................................8
PARTS AND TOOLS NEEDED FOR SERVICE...........................................................................................................................................................................................8
CALIPER EXPLODED VIEW ...........................................................................................................................................................................................................................8
CALIPER BRAKE PAD REMOVAL.................................................................................................................................................................................................................9
CALIPER PISTON REMOVAL....................................................................................................................................................................................................................... 10
CALIPER PISTON INSTALLATION ............................................................................................................................................................................................................. 13
DISC BRAKE PAD AND ROTOR BEDIN PROCEDURE ................................................................................................................................16

SAFETY FIRST!
We care about YOU. Please, always wear your safety glasses and
protective gloves when servicing SRAM®products.
Protect yourself! Wear your safety gear!

5SRAM Guide™ Brake Systems Service
SRAM Guide™ Brake Systems Service
We recommend that you have your SRAM Guide components serviced by a qualified bicycle mechanic. Servicing SRAM components requires
knowledge of bicycle mechanics as well as the special tools and lubricants/fluids used for service.
SRAM brake systems need to be serviced periodically to optimize braking function. If brake fluid is leaking from any area of the brake there may be
damage or wear and tear to the internal moving parts. If the system has been contaminated with the wrong fluid there may be damage to all rubber
and plastic internal parts. If your brake was damaged in a crash there may be damage to the lever blade, pushrod, and housing assemblies. Inspect
and replace these parts to restore proper brake function.
Visit www.sram.com/service for the latest SRAM Spare Parts catalog and technical information. For order information, please contact your local SRAM
distributor or dealer.
For recycling and environmental compliance information, please visit www.sram.com/company/environment.
Information contained in this publication is subject to change at any time without prior notice. Your product's appearance may differ from the pictures
contained in this publication.
SAFETY INSTRUCTIONS
Do not use mineral oil or DOT 5 fluid.
If the brake system has been contaminated with mineral oil or DOT 5 fluid, flush all of the parts with soapy water, rinse them with clean water, then
allow all the parts to dry prior to rebuilding. Install new seals, a new bladder, and replace the hose.
For best results, use only SRAM High-Performance DOT 5.1 brake fluid. If SRAM brake fluid is not available, only use DOT 5.1 or 4 brake fluid.
Use only DOT compatible grease.
Always wear safety glasses and nitrile gloves when working with DOT brake fluid.
Used DOT brake fluid should be recycled or disposed of in accordance to local and federal regulations.
Never pour DOT brake fluid down a sewage or drainage system or into the ground or a body of water.
Do not allow any brake fluid to come in contact with the brake pads. If this occurs, the pads are contaminated and must be replaced.
Place an oil pan on the floor underneath the area where you will be working on the brake.
Servicing your brakes removes all of the brake fluid from the system. You must bleed your brakes after you service the brake system. Consult the
SRAM MTB Disc Brake Hose Shortening and Bleed Manual at www.sram.com/service.
⚠CAUTION
Do not use mineral oil or DOT 5 fluid. Do not use tools, rags, or syringes that are contaminated with mineral oil or DOT 5 fluid. Using contaminated
materials will result in permanent damage to the seals and reduce braking performance. Brakes must be replaced if contaiminated with mineral oil or
DOT 5 fluid.

6Service Procedures
Service Procedures
The following procedures should be performed throughout service, unless otherwise specified.
Clean the part with isopropyl alcohol and a clean, lint-free shop towel.
Clean the sealing surface on the part and inspect it for scratches.
Replace the o-ring or seal with a new one from the service kit.
Use your fingers, a ziptie, or a pick to pierce and remove the old seal or o-ring.
Apply DOT grease to the new seal or o-ring when instructed.
NOTICE
Do not scratch any sealing surfaces when servicing the product. Scratches can
cause leaks. Consult the spare parts catalog to replace the damaged part.
Use aluminum soft jaws when placing a part in a bench vise.
Tighten the part with a torque wrench to the torque value listed in the red bar.
When using a crowfoot socket and torque wrench, install the crowfoot socket
at 90 degrees to the torque wrench.
Specified torque value in N·m (in-lb)

7Troubleshooting
Troubleshooting
Disc Brake Pad Advancement Procedure
NOTICE
Do not apply DOT brake fluid or grease to caliper pistons when performing troubleshooting procedures. Use of DOT brake fluid or grease can
diminish braking performance and cause rotor rubbing.
If your brakes exhibit excessive lever throw or spongy feel, perform the following steps before bleeding the system:
1. Clamp the bicycle into a bicycle work stand.
2. Remove the wheel from the affected caliper.
3. Remove the brake pads.
4. Install the pad spacer.
5. Squeeze the brake lever several times until the pistons have advanced and contact the pad spacer. One piston may move faster than the other;
continue to squeeze the lever until the pistons touch the spacer.
6. Remove the pad spacer.
7. Use a plastic tire lever to push the pistons back into the caliper bores.
8. Repeat steps 4-7 until the pistons move freely.
9. Install the brake pads and the wheel.
10. Loosen the caliper bolts.
11. Lightly squeeze (approx. 4 lbs) the brake lever several times to position the brake pads to the proper distance from the rotor.
12. Center the caliper on the rotor, and tighten the caliper bolts.
13. Spin the wheel and check the brake function. The pistons should move freely and there should not be excessive brake lever throw. If there is no
improvement in the brake function, proceed with caliper service.

8Caliper Service
Caliper Exploded View
Caliper Service
We recommend that you have your SRAM®Guide™ Brakes serviced by a qualified bicycle mechanic. Servicing SRAM brakes requires knowledge of
brake components as well as the special tools and fluids used for service.
For exploded diagram and part number information, please refer to the Spare Parts Catalog available on our website at
sram.com/service. For order information, please contact your local SRAM distributor or dealer.
Information contained in this publication is subject to change at any time without prior notice. For the latest technical information, please visit our
website at sram.com/service.
Your product's appearance may dier from the pictures contained in this publication
Parts and Tools Needed for Service
Parts
• Caliper Piston Kit
• SRAM Guide Brake Pad Kit
Safety and Protection Supplies
• Clean, lint-free rag
• Nitrile gloves
• Oil pan
• Safety glasses
SRAM Tools
• Pad Spacer Tool (1.8 mm) Guide/Trail Caliper
• SRAM Brake Bleed Kit (includes: Guide Bleed Block and Bleeding
Edge™ Fitting)
Common Tools
• 2.5, 5 mm hex wrench
• T25 TORX®wrench
• T25 TORX bit socket
• Digital caliper
• Needle nose pliers
• Pick with a 90 degree bent tip
• Torque wrench
Lubricants and Fluids
• Isopropyl alcohol
• SRAM High-Performance DOT 5.1 brake fluid. If SRAM fluid is
not available, only use DOT 5.1 or 4 fluid.
• SRAM or AVID DOT grease. If SRAM or AVID DOT grease is not
available only use a DOT compatible grease.
E-clip
Banjo
fitting Banjo
bolt
Caliper body
bolt
Caliper square body seal
Caliper square
body seal
Pad retention bolt
Inboard caliper body
Outboard caliper
body
Caliper pistons
Caliper pistons
Piston seals
Piston seals
Brake pads
Pad H-Spring
Bleeding Edge™port
Caliper body
bolt
Heat
shield
Guide Pad Spacer
Banjo

9Caliper Brake Pad Removal
Caliper Brake Pad Removal
Use a 5 mm hex wrench to remove the brake caliper from the fork or
frame.
Remove the caliper mounting bracket and hardware from the caliper
then set them aside in the order that they were removed.
Remove the E-clip from the pad retention bolt.
Remove the pad retention bolt from the caliper.
Remove the brake pads and pad H-spring from the caliper.
NOTICE
If the brake pad thickness is less than 3 mm, replace the pads.
1
2
Needle nose pliers 20 mm or 15 mm Thru Axle
2.5 mm QR
3
Digital Caliper 2.7-3.2 N•m (24-28 in-lb) 22 mm

10Caliper Piston Removal
Caliper Piston Removal
NOTICE
DOT fluid will damage painted surfaces. If any fluid comes in contact with a painted surface (e.g your frame) or printing on the brakes, wipe it off
immediately and clean it with isopropyl alcohol or water. Damage to painted and/or printed surfaces by DOT fluid is not covered under warranty.
Install the pad retention bolt.
Insert the Guide™ pad spacer so that it snaps onto the pad retention
bolt.
Squeeze the brake lever numerous times to advance the pistons until
they contact the pad spacer.
Remove the banjo bolt.
Remove the pad spacer.
Remove the pad retention bolt.
1
2.5 mm 20 mm or 15 mm Thru Axle
2
3
T25 Rubber-tipped blow gun chuck nozzle 22 mm
4
2.5 mm QR

11Caliper Piston Removal
Remove each caliper body bolt.
Separate the caliper body halves.
Set the heat shield aside.
Remove the caliper square body seals from the outboard side of the
caliper.
Remove the pistons from each caliper body half.
5
T25 Rubber-tipped blow gun chuck nozzle 22 mm
6
7
8

12Caliper Piston Removal
Remove the piston seals from each caliper body half. Install new seals
inside each caliper body half.
⚠WARNING
Do not scratch the seal gland with the pick. Scratches could cause fluid
to leak when the brake is applied, which will contaminate the brake
pads and could lead to a brake failure.
9
Pick 20 mm or 15 mm Thru Axle

13Caliper Piston Installation
Caliper Piston Installation
NOTICE
DOT fluid will damage painted surfaces. If any fluid comes in contact with a painted surface (e.g. your frame) or printing on the brakes, wipe it off
immediately and clean it with isopropyl alcohol or water. Damage to painted and/or printed surfaces by DOT fluid is not covered under warranty.
Inspect the caliper pistons for damage and replace the pistons if
necessary.
Apply a small amount of SRAM High-Performance DOT 5.1 brake fluid
to the circumference of each piston. Install the pistons into the caliper
bores.
NOTICE
For the best braking performance, use only SRAM High-Performance
DOT 5.1 brake fluid. If SRAM fluid is not available, use only DOT 5.1 or
4 fluid. Do not use grease. Grease will prevent the pistons from fully
retracting into the caliper bores which will reduce braking performance.
Spray isopropyl alcohol on the caliper halves and both of your gloves
and clean them with a rag.
Add a small amount of DOT compatible grease onto the new caliper
square body seals, then install onto the caliper.
SRAM®DOT 5.1 brake fluid
1
2
3
SRAM DOT grease Rubber-tipped blow gun chuck nozzle 22 mm

14Caliper Piston Installation
Align the caliper body halves then use a T25 TORX®wrench to thread
each body bolt into the caliper two full turns.
Install the heat shield into the tabs, and make sure the heat shield is
pushed firmly flush against the caliper.
NOTICE
If the heat shield is not installed so that it is pushed against the caliper
wall, then it could interfere with brake performance.
Tighten each body bolt.
Remove the o-rings from the banjo bolt and banjo fitting.
Apply a small amount of SRAM®High-Performance DOT 5.1 brake fluid
to the new o-rings and install them.
T25 20 mm or 15 mm Thru Axle
4
5
T25 TORX 9.8 - 11.8 N·m (87 - 104 in-lb) 22 mm
6
SRAM DOT 5.1 brake fluid 20 mm or 15 mm Thru Axle

15Caliper Piston Installation
Hold the banjo at the desired angle.
Tighten the banjo bolt.
Insert the Guide™ bleed block into the caliper.
Install the pad retention bolt.
⚠WARNING
You must bleed your brakes before reinstalling the brake pads.
Installing the brake pads prior to bleeding the brakes could
contaminate the brake pads and lead to a brake failure.
Spray isopropyl alcohol on the caliper and clean it with a rag.
Visually check your work. If any of the o-rings protrude from the banjo fitting or banjo bolt, remove and replace the o-rings, then repeat the installation
process.
⚠CAUTION
Servicing your brakes removes all of the fluid from the system. You must bleed the brakes after you service the brake caliper.
For brake bleed, hose shortening, and brake pad replacement instructions consult the MTB Disc Brake Hose Shortening and Bleed Manual at
www.sram.com/service.
7
T25 4.4-5.4 N·m (39-48 in-lb) 22 mm
7
8
Guide Bleed block 15 N•m (133 in-lb) 22 mm
2.5 mm 15 N•m (133 in-lb) 22 mm
9

16Disc Brake Pad and Rotor Bed-in Procedure
Disc Brake Pad and Rotor Bed-in Procedure
All new brake pads and rotors should be put through a wear-in process called 'bed-in'. The bed-in procedure, which should be performed prior to your
first ride, ensures the most consistent and powerful braking feel along with the quietest braking in most riding conditions. The bed-in process heats
up the brake pads and rotors, which deposits an even layer of brake pad material (transfer layer) to the braking surface of the rotor. This transfer layer
optimizes braking performance. To watch a video of the bed-in procedure, visit www.sram.com/service.
⚠WARNING CRASH HAZARD
The bed-in process requires you to perform heavy braking. You must be familiar with the power and operation of disc brakes. Braking heavily when
not familiar with the power and operation of disc brakes could cause you to crash, which could lead to serious injury and/or death. If you are unfamiliar
with the power and operation of disc brakes, you should have the bed-in process performed by a qualified bicycle mechanic.
To safely achieve optimal results, remain seated on the bike during the entire bed-in procedure. Do not lock up the wheels at any point during the
bed-in procedure.
• Accelerate the bike to a moderate speed, then firmly apply the brakes until you are at walking speed. Repeat approximately twenty times.
• Accelerate the bike to a faster speed, then very firmly apply the brakes until you are at walking speed. Repeat approximately ten times.
• Allow the brakes to cool prior to any additional riding.
• After the bed-in procedure has been performed, the caliper may need to be re-centered.

17
This publication includes trademarks and registered trademarks of the following companies:
TORX® is a registered trademark of Acument Intellectual Properties, LLC.

18
ASIAN HEADQUARTERS
SRAM Taiwan
No. 1598-8 Chung Shan Road
Shen Kang Hsiang, Taichung City
Taiwan R.O.C.
WORLD HEADQUARTERS
SRAM LLC
1000 W. Fulton Market, 4th Floor
Chicago, Illinois 60607
USA
EUROPEAN HEADQUARTERS
SRAM Europe
Paasbosweg 14-16
3862ZS Nijkerk
The Netherlands
www.sram.com