SRAM 1x Road Systems User Manual

Tools and Supplies

Highly specialized tools and supplies are required for the installation of SRAM components. It is recommended to have a qualified bicycle mechanic install your SRAM components. The manual illustrates various specialized tools required for installation, including a torque wrench, hex keys, a chain tool, cable cutters, grease, gloves, and a measuring tape.

Derailleur Installation

This section details the installation of the derailleur. A notice warns against applying grease to the mounting bolt or derailleur hanger threads. It emphasizes pushing the B-adjust washer forward during installation, ensuring there is no gap between the B-washer and the derailleur hanger to prevent loosening or detachment. The installation requires a torque of 10-12 N·m (88-106 in-lb).

Derailleur Adjustment

High Limit Screw Adjustment

This procedure explains how to adjust the high limit screw. The diagram shows the alignment of the upper guide pulley with the smallest cog's outer edge. The high limit screw, labeled 'H', is used for this adjustment.

Low Limit Screw Adjustment

This procedure details the adjustment of the low limit screw. The diagram illustrates aligning the upper guide pulley with the center of the largest cog. The low limit screw, labeled 'L', is used for this adjustment.

Shift-Brake Lever Installation

Instructions are provided for installing the SRAM HydroR Shift-Brake Lever and Caliper, directing users to the specific manual available at SRAM.com. Step 1 shows mounting the shifter assembly onto the handlebar and setting it to the desired position. Step 2 demonstrates folding the hood cover forward and tightening the shifter bolt to 6-8 N·m (53-70 in-lb) using a 5mm hex wrench. Diagrams illustrate the routing of the brake cable and housing through the shifter assembly.

Reach Adjustment

This section covers adjusting the reach of both the shift and brake levers. For the shift lever, adjust it to the desired position. For the brake lever, adjust it to the desired position, ensuring a small gap is left between the shift lever and the brake lever. Diagrams show the adjustment process for both levers.

Cable Routing

Instructions are provided for routing the derailleur cable and housing. Measure and cut the derailleur housing to avoid tight bends when installed. Install a ferrule onto the housing and then route it through the frame and derailleur. Diagrams illustrate the cable path and the importance of proper housing length.

Further steps involve setting the shifter to the furthest outboard position, turning the barrel adjuster clockwise until it stops, then counter-clockwise one full rotation. Route the cable through the housing and derailleur, pull it tight, and then tighten the anchor bolt. Diagrams show these steps, including the barrel adjuster and anchor bolt tightening.

Chain Sizing

Proper chain sizing is crucial for derailleur adjustment. The manual includes warnings about the potential for chain failure or crashes resulting in serious injury or death if the chain is not sized or connected correctly. For detailed chain installation instructions, users are directed to visit www.sram.com/service.

Chain Installation

The process begins by moving the chain to the smallest cassette cog. Then, rotate the derailleur cage forward and press the Cage Lock button to lock the derailleur in its extended position. Route the chain through the derailleur pulleys. A critical warning highlights the pinch hazard, stating that the derailleur is spring-loaded and returns rapidly from the Cage Lock position, requiring users to keep fingers clear of pinch points.

The installation continues with pulling the chain ends together and installing the PowerLock connector, ensuring the arrow points in the direction of chain travel. The PowerLock is designed for single use only and requires master link pliers for removal. It is essential to install a new PowerLock each time a new chain is installed. Diagrams illustrate these steps, including the PowerLock mechanism and its proper orientation.

The final steps involve releasing the Cage Lock by rotating the cage forward and carefully letting it return to the unlocked position. Rotate the crank until the PowerLock is above the chainstay. Check that the PowerLock halves are properly aligned, apply the rear brake, and push the crank arm down firmly to lock the PowerLock, listening for an audible click. Finally, check the PowerLock by hand to ensure it moves freely.

Chain Gap Adjustment

This section explains how to adjust the chain gap. Shift the chain onto the largest rear cog. Install the chain gap adjustment gauge onto the upper pulley wheel. Turn the B-Adjust screw to align the tallest teeth of the largest cassette cog with the groove outline on the gauge.

Chain Gap Adjustment Without Gauge

This procedure details how to adjust the chain gap without using a specific tool, referencing a 15mm measurement.

Shifting

Instructions are provided for operating the shifters. Press the shifter paddle slightly to move the rear derailleur outboard to a smaller cog. Press the shifter paddle further to move the rear derailleur inboard to a larger cog, with further presses enabling multiple inboard shifts.

Shifting Adjustments

This section addresses slow shifting. If shifting from a larger cog to a smaller cog (outboard shifting) is slow, turn the shifter's barrel adjuster clockwise in 1-click increments until shifting is correct. If shifting from a smaller cog to a larger cog (inboard shifting) is slow, turn the shifter's barrel adjuster counter-clockwise in 1-click increments until shifting is correct.

Maintenance

Clean the cassette and chain using only biodegradable cleaners. Rinse thoroughly with water and allow parts to dry. Lubricate the chain with chain lubricant according to the manufacturer's instructions, lubricating regularly to extend its service life. Crucial warnings are provided against using alkaline or acidic solvents, or soaking/storing the chain or cassette in any cleaning product, as this can make them brittle, cause breakage under load, and lead to serious injury or death.