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Dive Rite XT1 Service Manual
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Dive Rite XT1 Service Manual

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XT1 First Stage
Service Manual
Copyright 2018 Lamartek Inc. dba Dive Rite
1

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Summary of Contents for Dive Rite XT1

  • Page 1 XT1 First Stage Service Manual Copyright 2018 Lamartek Inc. dba Dive Rite...
  • Page 2 Possession of this guide does not qualify any individual in the service of Dive Rite Breathing Systems. Only qualified Dive Rite dealers can service Dive Rite Products. Improper servicing can lead to serious injury or death. • Only Original Parts ordered from Dive Rite...
  • Page 3 Table of Contents • Pages 4 Required Tools • Pages 5 Schematic • Pages 6-21 Disassembling the First Stage • Pages 22-39 Assembling the First Stage • Pages 40-43 Tuning and Adjusting Dive Rite Regulators...

  • Page 4: Required Tools

    Required Tools • Torque wrench 3/8 drive up to 200 in/lb • Spanner wrench (RG1271-PL) • 5 port tool (RG1281-5PTOOL) • 6mm hex wrench • 2mm hex wrench • ¼ inch hex wrench • ¼ inch nut driver • 1” socket wrench...
  • Page 5 23 RG1235 XT1 - FS - ORING 24 RG1236 XT1 - FS - ORING 25 RG5125 XT1 - FS - TURRET BOLT W/ 5TH PORT 26 RG1231 XT1 - FS - ORING 27 RG5127 XT1 - FS - HP PLUG...
  • Page 6 Disassembling the XT1 First Stage 1) Remove all port plugs and secure the first stage in a vise using an appropriate tool 2) Loosen and remove the Environmental Cap (38), it may be necessary to use a Spanner wrench...
  • Page 7 3) Remove the Silicone Disc (37) and the Transition Piston (36) *Take care to not damage the Silicone Disk...
  • Page 8 4) Use a 6mm Hex wrench to loosen the Adjustment Screw (15) until spring tension is relieved 5) Use the spanner wrench to loosen the Diaphragm Cap (35)
  • Page 9 6) Remove the Diaphragm Cap (35), Main Spring (14), Spring Seat (12), and Adjustment Screw (15) *The two Spring Washers (13) will be reused *Note the difference in the threaded ends of the Diaphragm Cap (35). The larger diameter thread installs to the Main Housing (8) Small diameter / long length Large diameter / short length...
  • Page 10 7) Remove the Diaphragm Washer (11), Diaphragm (10), and Valve Lifter (9) *Use a Pick to puncture and remove the diaphragm. DO NOT pry the Diaphragm up from the edge. This Will damage the seating surface!
  • Page 11 8) Use the 5 port tool to loosen the Turret Bolt (25). *The 5 port tool can be inserted into a 1” socket for use with a ratchet or breaker bar.
  • Page 12 9) Remove the Turret Bolt (25) 10) Remove the O-ring (20) and Thrust Washer (19)
  • Page 13 11) Remove the Turret (18), Style Ring (16), and O-ring (17)
  • Page 14 12) Remove the HP Seat (21), Balance Spring (22), and O-rings (23, 24)
  • Page 15 *For yoke regulators skip to page 18 13a) Use a ¼ inch hex wrench to loosen and remove the DIN Bolt (33). This will allow removal of the DIN assembly...
  • Page 16 14a) Remove the Saddle (7), DIN Bolt Bushing (30), and Din Handwheel (31)
  • Page 17 15a) Remove the O-ring (34) from the Din Bolt (33) and use a dowel to push out the Filter (4) and O-ring (5) *Skip to page 20...
  • Page 18 13b) Remove the Yoke Knob (1) and use the 1” socket wrench to loosen and remove the Yoke Retainer (3). This will allow removal of the yoke assembly...
  • Page 19 14b) Remove the Saddle (7), Dust Cap (6), and 232 Bar Yoke (2) 15b) Use a dowel to push out the Filter (4) and O-ring (5)
  • Page 20 16) Use a 2mm hex wrench push out the HP Orifice (40) 17) Remove the O-ring (39)
  • Page 21 This completes disassembly of the XT1 First Stage Warning!!! Only original Dive Rite parts are to be used • Parts should be cleaned in a solution compatible with Oxygen use. • All points of lubrication (O-rings, Etc.) require the use of an Oxygen compatible lubricant. I.E.
  • Page 22 Assembling the XT1 First Stage 1) Install O-ring (39) onto the HP Orifice (40) and install into the Main Housing (8) *Use the ¼ inch nut driver to push the Orifice into place *Confirm that the Orifice is fully seated *This is a 90 durometer o-ring.
  • Page 23 *For yoke regulators skip to page 26 2a) Install O-ring (34) onto DIN Bolt (33) 3a) Install O-ring (5) and Filter (4) into DIN Bolt (33)
  • Page 24 4a) Install the Din Handwheel (31), DIN Bolt Bushing (30), and Saddle (7)
  • Page 25 5a) Install the Din Bolt and tighten with a ¼ inch hex wrench to 20-25 ft-lb *Skip to page 29...
  • Page 26 2b) Install O-ring (5) into Yoke Retainer (3) 3b) Install Filter (4) into Yoke Retainer (3)
  • Page 27 4b) install 232 Bar Yoke (2) and Saddle (7) onto Yoke Retainer (3). Install yoke assembly into Main Housing (8) and tighten with a 1” socket wrench to 20-25 ft-lb...
  • Page 28 5b) Install Dust Cap (6) by stretching it over the yoke assembly and install the Yoke Knob (1)
  • Page 29 6) Install the Valve Lifter (9)
  • Page 30 7) Lubricate the center of both sides of the Diaphragm (10) and install 8) Install Teflon Washer (11)
  • Page 31 9) Place Spring Seat (12) with Spring Washer (13) onto Diaphragm (10) 10) Place the Main Spring (14) onto the Spring Seat (12)
  • Page 32 (11) Lubricate the Adjustment Screw (15) with silicone grease and install into the Diaphragm Cap (35) *Ensure that Spring Washer (13) is in place on the Adjustment Screw (15)
  • Page 33 12) Lubricate the threads on the Diaphragm Cap (35). Install and tighten with the spanner wrench *The cap should be tightened until the cap flange bottoms out on the Main Housing...
  • Page 34 13) Lubricate and install the O-rings (23, 24) onto the Turret Bolt (25) 14) Install the Balance Spring (22). Lubricate stem of the HP Seat (21) and install *Compress the HP seat to ensure proper movement...
  • Page 35 15) Lubricate and install O-ring (17) and Turret (18)
  • Page 36 16) Install Thrust Washer (19) into turret, lubricate and install O-ring (20) on top of the washer 17) Install the Turret Bolt assembly...
  • Page 37 18) Tighten Turret Bolt with the 5 port tool to 150 in-lbs 19) Install the Style Ring (16) by stretching it over the turret...
  • Page 38 The first stage needs to be pressurized for the following steps IP Adjustments should be completed prior to the following steps 20) Install the Transition Piston (36)
  • Page 39 21) Install the Silicone Disk (37) 22) Install the Environmental Cap (38) hand tight *Press down lightly on the Silicon Disk while tightening the Environmental Cap. This completes assembly of the XT1 First Stage...
  • Page 40 Tuning and Adjusting Dive Rite Regulators...
  • Page 41 1) Attach a second stage adjusting tool between the second stage and the low pressure hose. The first stage can also be connected to a overpressure valve 2) Close all other open ports with the appropriate plugs.
  • Page 42 3) Connect to a high pressure (3000 psi) gas source. 4) Open the supply pressure slowly. 5) Adjust the intermediate pressure by moving the adjusting screw to increase or decrease tension on the intermediate pressure spring. (Purge the second stage after each adjustment.) 6) The Intermediate pressure should be adjusted to 140 psi +/- 5psi.
  • Page 43 Tuning the Second Stages 1) Turn the adjustment knob counterclockwise until it stops; this will set the second stage for the least resistance. 2) Using the second stage adjusting tool set the resistance to .8-1.0 inches of water. 3) Purge the regulator and observe the intermediate pressure. An intermediate pressure drop of 2-8 psi is considered acceptable Note: By setting the adjustment knob to the easiest setting, the diver can increase breathing resistance to his/her preference.