Robinson R-66 Series Lithium-Ion User manual

KI-239-4 Revision B
6 DEC 2018 R66 Aux Fuel Tank Installation Time Delay Upgrade Kit Page 1 of 5
R66 Aux Fuel Tank Installation Relay Upgrade Kit Instructions
(To comply with R66 Service Bulletin SB-24)
NOTE
Visit www.robinsonheli.com to verify kit instructions are current revision.
Review instructions before installation; contact RHC Technical Support
with questions. Verify kit contents match list; contact RHC Customer
Service if parts are missing or damaged.
Kit Instructions
1. Remove aux tank per R66 Maintenance Manual (MM) § 28-51.
2. Remove aft, right seat back (back rest) assembly per MM § 25-22.
3. Refer to Figure 1. Locate G655-3 time delay connected to airframe harness plug labeled “AUX FUEL
TIME DLY”. Disconnect aux fuel time delay and remove. Determine if (removed) time delay is affected
by R66 SB-24; discard if affected by SB-24, otherwise retain as spare, if desired.
CAUTION
Helicopters equipped with air conditioning have an additional G655-3
time delay installed. Ensure time delay removed is disconnected from
harness connector labeled “AUX FUEL TIME DLY”.
4. Refer to Figure 3. Slide B158-10-SB-24 heat shrink over [removed time delay] airframe connector
(marked “AUX FUEL TIME DLY”) so “SB-24” is visible and apply heat. Verify connector is insulated and
heat shrink is secure.
5. Refer to Figure 1. Remove ty-raps securing G656-1 module (generator-reset) to harness but do not
disconnect attached connector. If air conditioning (A/C) is installed, locate G655-3 time delay connected
to airframe harness plug labeled “A/C TIME DLY” and remove ty-raps securing time delay.
1 KI-239-4 Instr. Kit Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 B158-10-SB-24 Heat Shrink – 5/8-inch diameter, 1.50 inches long (marked “SB-24”) . . . . 2
3 D835-4 Harness Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 XESR10-S01-FP-0787 Time Delay Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
5 MS21042L08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6 MS27039C0807 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
7 MS3367-3-9 Ty-rap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8 MS3367-5-9+ Ty-rap (Note: “+” in contents part number indicates 20-qty pack) . . . . . . . . 1
9 MS3367-7-9+ Ty-rap (Note: “+” in contents part number indicates 10-qty pack) . . . . . . . . 1
10 NAS1149FN816P+ Washer (Note: “+” in contents part number indicates 20-qty pack) . . . . . . 1
ITEM PART NUMBER KIT CONTENTS QTY

KI-239-4 Revision B
Page 2 of 5 R66 Aux Fuel Tank Installation Time Delay Upgrade Kit 6 DEC 2018
6. Refer to Figure 2. Lay out (lower) hole location for XESR10-S01-FP-0787 time delay relay as shown.
Position vacuum cleaner nozzle adjacent to capture debris. Drill (1) 0.170-inch hole. Deburr hole
and clean up debris. Temporarily install time delay relay in newly drilled hole using appropriate sized
CLECO sheet metal fastener. Using time delay relay as template, trace remaining hole with scribe.
Remove time delay relay and using vacuum cleaner, drill (1) 0.170-inch hole thru center of scribed hole.
Deburr hole and clean up debris.
7. Refer to Figure 3. Install time delay relay using (2) MS27039C0807 screw, (2) NAS1149FN816P
washer, and (2) MS21042L08 nut. Verify security.
8. Refer to Figure 1. Locate B280-10 relay assembly connected to airframe harness plug labeled “AUX
FUEL RELAY”. Disconnect relay, remove and discard. Connect D835-4 harness assembly to [removed
relay] airframe plug. Secure connector using (1) MS3367-3-9 ty-rap. Cinch ty-rap until snug without
over-tightening, and trim tips ush with heads. Verify security.
9. Refer to Figure 3. Route D835-4 harness assembly along airframe main harness as shown. Connect
harness assembly to newly installed XESR10-S01-FP-0787 time delay relay.
10. Verify integrity of respective connections and secure D835-4 harness assembly, G656-1 module, G655-3
A/C time delay (if installed), and aux fuel time delay harness to airframe harness, using appropriately-
sized ty-raps as required. Cinch ty-raps until snug without over-tightening, and trim tips ush with heads.
Verify security and ensure sufcient slack at time delay relay connection to prevent preload on wires.
CAUTION
Do not secure D835-4 harness assembly to main harness across inboard-
side connector, or across G656-1 module connector. Damage is likely to
occur to connector.
11. Verify area cleanliness and install aft right seat back (back rest) assembly per MM § 25-22.
12. Install aux tank per MM § 28-51.
13. Load approximately one gallon of fuel into aux fuel tank. Verify main fuel tank has space to receive
fuel in aux fuel tank. Connect ground power to external receptacle. Turn battery switch ON, press
QUANTITY button to check aux fuel quantity and verify NO FLOW light illuminates. Turn aux fuel pump
switch ON and verify NO FLOW light illuminates in one to two minutes (indicating fuel transfer from
aux tank to main tank is complete). Turn aux fuel pump and battery switches OFF. Disconnect ground
power.
14. Make appropriate maintenance record entries. No change to Weight and Balance Record is required.
Kit Instructions (continued)

KI-239-4 Revision B
6 DEC 2018 R66 Aux Fuel Tank Installation Time Delay Upgrade Kit Page 3 of 5
FIGURE 1
(view looking aft)

KI-239-4 Revision B
Page 4 of 5 R66 Aux Fuel Tank Installation Time Delay Upgrade Kit 6 DEC 2018
FIGURE 2
(view looking aft)

KI-239-4 Revision B
6 DEC 2018 R66 Aux Fuel Tank Installation Time Delay Upgrade Kit Page 5 of 5
FIGURE 3
(view looking aft)